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19-1699; Rev 0; 9/00
500mA Low-Dropout Linear Regulator in MAX
General Description
The MAX1792 low-dropout linear regulator operates from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 130mV dropout. The high-accuracy (1%) output voltage is preset at an internally trimmed voltage (see Selector Guide) or can be adjusted from 1.25V to 5.0V with an external resistive divider. An internal PMOS pass transistor allows the low 80A supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers. Other features include an active-low open-drain reset output with a 4ms timeout period that indicates when the output is out of regulation, a 0.1A shutdown mode, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 1.3W, 8-pin power-MAX package with a metal pad on the underside of the package. o Guaranteed 500mA Output Current o Low 130mV Dropout at 500mA o Up to 1% Output Voltage Accuracy Preset at 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V Adjustable from 1.25V to 5.0V o Reset Output with 4ms Timeout Period o Low 80A Ground Current o 0.1A Shutdown Current o Thermal Overload Protection o Output Current Limit o Tiny 1.3W Power-MAX Package
Features
MAX1792
Ordering Information
PART* MAX1792EUA_ _ TEMP RANGE -40C to +85C PIN-PACKAGE 8 Power-MAX
________________________Applications
Notebook Computers Cellular and Cordless Telephones Personal Digital Assistants (PDAs) Palmtop Computers Base Stations USB Hubs Docking Stations
*Insert the desired two-digit suffix (see Selector Guide) into the blanks to complete the part number. Contact factory for other preset output voltages.
Selector Guide
PART AND SUFFIX MAX1792EUA15 MAX1792EUA18 MAX1792EUA25 MAX1792EUA33 MAX1792EUA50 VOUT 1.5V or Adj. 1.8V or Adj. 2.5V or Adj. 3.3V or Adj. 5.0V or Adj. MAX TOP MARK AAAE AAAA AAAB AAAC AAAD
Typical Operating Circuit
TOP VIEW
VIN = +2.5V TO +5.5V CIN 1F IN NC IN OUT OUT VOUT COUT 3.3F RRST 100k RST TO C IN 1 IN 2
Pin Configuration
8 7
OUT OUT SET GND
MAX1792
ON SHDN OFF
MAX1792
RST 3 6 5 SHDN 4
SET
GND
POWER-MAX
________________________________________________________________ Maxim Integrated Products
1
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500mA Low-Dropout Linear Regulator in MAX MAX1792
ABSOLUTE MAXIMUM RATINGS
IN, SHDN, RST, SET to GND ....................................-0.3V to +6V OUT to GND ................................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration ........................................Indefinite Continuous Power Dissipation (TA = +70C) 8-Pin Power-MAX (derate 17mW/C above +70C) .......1.3W Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VOUT(NOM) + 500mV, or VIN = +2.5V (whichever is greater), SHDN = IN, TA = 0C to +85C, unless otherwise noted. Typical values are at TA = +25C.)
PARAMETER Input Voltage Input Undervoltage Lockout SYMBOL VIN VUVLO Rising, 75mV hysteresis IOUT = 100mA, TA = +85C Output Voltage Accuracy (Preset Mode) VOUT Preset VOUT 2.5V Preset VOUT < 2.5V CONDITIONS MIN 2.5 2.0 -1 -1.5 -2 -3 1.25 VIN = +2.7V, VOUT set to 2.0V, IOUT = 100mA VIN 2.7V VOUT = 0, VIN 2.7V VOUT > 96% of nominal value, VIN 2.7V 50 ISET IQ VIN VOUT VLNR VLDR VSET = 1.25V IOUT = 1mA IOUT = 500mA VOUT = 5.0V IOUT = 500mA VOUT = 3.3V VOUT = 2.5V VIN from (VOUT + 100mV) to 5.5V, ILOAD = 5mA IOUT = 1mA to 500mA 10Hz to 1MHz, COUT = 3.3F (ESR < 0.1) IOFF VIH VIL SHDN = GND, VIN = 5.5V 2.5V < VIN < 5.5V 2.5V < VIN < 5.5V SHDN = IN or GND -0.15 -100 80 110 120 130 210 0 0.4 115 0.1 1.6 0.6 10 100 15 225 250 360 +0.15 1.0 %/V % VRMS A V nA mV TA = +85C TA = 0C to +85C 1.229 1.219 500 0.55 0.8 1.6 100 150 +100 250 1.8 1.250 2.15 TYP MAX 5.5 2.3 +1 +1.5 +2 +3 5 1.271 V 1.281 mARMS A A mV nA A % UNITS V V %
IOUT = 100mA, TA = 0C to +85C IOUT = 1mA to 500mA, VIN > VOUT + 0.5V, TA = 0C to +85C
Adjustable Output Voltage Range SET Voltage Threshold (Adjustable Mode) Maximum Output Current Short-Circuit Current Limit In-Regulation Current Limit SET Dual ModeTM Threshold SET Input Bias Current Ground-Pin Current VSET IOUT ILIM
V
Dropout Voltage (Note 1)
Line Regulation Load Regulation Output Voltage Noise SHUTDOWN Shutdown Supply Current SHDN Input Threshold SHDN Input Bias Current
Dual Mode is a trademark of Maxim Integrated Products. 2 _______________________________________________________________________________________
500mA Low-Dropout Linear Regulator in MAX
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VOUT(NOM) + 500mV, or VIN = +2.5V (whichever is greater), SHDN = IN, TA = 0C to +85C, unless otherwise noted. Typical values are at TA = +25C.)
PARAMETER RESET OUTPUT Reset Output Low Voltage Operating Voltage Range for Valid Reset RST Output High Leakage Current RST Threshold RST Release Delay THERMAL PROTECTION Thermal Shutdown Temperature Thermal Shutdown Hysteresis TSHDN TSHDN 170 20 C C tRP VOL RST sinking 1mA RST sinking 100A V RST = +5.5V Rising edge, referred to VOUT(NOMINAL) Rising edge of OUT to rising edge of RST 90 1.5 93 4.5 1.0 0.01 0.1 5.5 100 96 8 V V nA % ms SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX1792
ELECTRICAL CHARACTERISTICS
(VIN = VOUT(NOM) + 500mV, or VIN = +2.5V (whichever is greater), SHDN = IN, TA = -40C to +85C, unless otherwise noted.) (Note 2)
PARAMETER Input Voltage Input Undervoltage Lockout Output Voltage Accuracy (Preset Mode) Adjustable Output Voltage Range SET Voltage Threshold (Adjustable Mode) Maximum Output Current Short-Circuit Current Limit SET Dual Mode Threshold SET Input Bias Current Ground-Pin Current Dropout Voltage (Note 1) ISET IQ VIN VOUT VLNR VLDR IOFF VIH VIL I SHDN VSET = 1.25V IOUT = 1mA VOUT = 5.0V IOUT = 500mA VOUT = 3.3V VOUT = 2.5V VIN from (VOUT + 100mV) to 5.5V, ILOAD = 5mA IOUT = 1mA to 500mA SHDN = GND, VIN = +5.5V 2.5V < VIN < 5.5V 2.5V < VIN < 5.5V SHDN = IN or GND 1.6 0.6 100 -0.15 VSET IOUT ILIM VOUT = 0 IOUT = 100mA SYMBOL VIN VUVLO VOUT Rising or falling IOUT = 100mA IOUT = 1mA to 500mA CONDITIONS MIN 2.5 2.0 -2 -3 1.25 1.212 500 0.55 50 -100 1.8 150 +100 250 225 250 360 +0.15 1.0 15 mV %/V % A V nA MAX 5.5 2.3 +2 +3 5 1.288 UNITS V V % V V mARMS A mV nA A
Line Regulation Load Regulation SHUTDOWN Shutdown Supply Current SHDN Input Threshold SHDN Input Bias Current
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500mA Low-Dropout Linear Regulator in MAX MAX1792
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VOUT(NOM) + 500mV, or VIN = +2.5V (whichever is greater), SHDN = IN, TA = -40C to +85C, unless otherwise noted.) (Note 2)
PARAMETER RESET OUTPUT Reset Output Low Voltage Operating Voltage Range for Valid Reset RST Output High Leakage Current RST Threshold RST Release Delay tRP VOL RST sinking 1mA RST sinking 100A V RST = +5.5V Rising edge, referred to VOUT(NOMINAL) Rising edge of OUT to rising edge of RST 90 1.5 1.0 0.1 5.5 100 96 8 V V nA % ms SYMBOL CONDITIONS MIN MAX UNITS
Note 1: Dropout voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT measured when VIN = VOUT(NOM) + 0.5V. Since the minimum input voltage is 2.5V, this specification is only meaningful when VOUT(NOM) 2.5V. For VOUT(NOM) between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V VOUT(NOM) + 445mV; Guaranteed Maximum Dropout = -137mV/V VOUT(NOM) + 704mV. For VOUT(NOM) 3.5V: Typical Dropout = 120mV; Guaranteed Maximum Dropout = 225mV. Note 2: Specifications to -40C are guaranteed by design, not production tested.
Typical Operating Characteristics
(MAX1792EUA33, VIN = VOUT + 500mV, SHDN = IN, CIN = 1F, COUT = 3.3F, TA = +25C, unless otherwise noted.)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1792-01
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1792-02
OUTPUT VOLTAGE vs. TEMPERATURE
VIN = VOUT + 500mV IOUT = 0
MAX1792-03
3.5 3.0 OUTPUT VOLTAGE (V) 2.5 2.0 1.5 1.0 0.5 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 IOUT = 0 IOUT = 500mA
3.33 3.32 OUTPUT VOLTAGE (V) 3.31 3.30 3.29 3.28 3.27
3.33 3.32 OUTPUT VOLTAGE (V) 3.31 3.30 3.29 3.28 3.27
5.5
0
100 200 300 400 500 600 700 800 LOAD CURRENT (mA)
-40
-15
10
35
60
85
INPUT VOLTAGE (V)
TEMPERATURE (C)
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX1792-04
GROUND-PIN CURRENT vs. INPUT VOLTAGE
IOUT = 500mA 120 GROUND-PIN CURRENT (A) 100 80 60 40 20
MAX1792-05
GROUND-PIN CURRENT vs. LOAD CURRENT
130 GROUND-PIN CURRENT (A) 120 110 100 90 80 70 60 0 100 200 300 400 500 600 700 800 LOAD CURRENT (mA) VIN = 3.8V
MAX1792-06
250 TA = +85C DROPOUT VOLTAGE (mV) 200
140
140 VIN = 5.5V
150
TA = +25C
IOUT = 0
100 TA = -40C 50
0 0 100 200 300 400 500 600 700 800 LOAD CURRENT (mA)
0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V)
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500mA Low-Dropout Linear Regulator in MAX MAX1792
Typical Operating Characteristics (continued)
(MAX1792EUA33, VIN = VOUT + 500mV, SHDN = IN, CIN = 1F, COUT = 3.3F, TA = +25C, unless otherwise noted.)
GROUND-PIN CURRENT vs. TEMPERATURE
MAX1792-07
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
-70 -60 PSRR (dB) -50 -40 -30 COUT = 3.3F IOUT = 50mA
MAX1792-08
95 90 GROUND-PIN CURRENT (A) 85 80 75 70 65 60 -40
VIN = VOUT + 500 mV IOUT = 0
-80
-20 -10 0 -15 10 35 60 85 0.01 0.1 1 10 100 1000 TEMPERATURE (C) FREQUENCY (kHz)
OUTPUT SPECTRAL NOISE DENSITY vs. FREQUENCY
MAX1792-09
OUTPUT NOISE DC TO 1MHz
MAX1792-10
OUTPUT SPECTRAL NOISE DENSITY (V/Hz)
10
COUT = 3.3F IOUT = 50mA
1
0.1
VOUT 200V/div
0.01 0.001 0.1 1 10 FREQUENCY (kHz) 100 1000
VOUT = 3.3V ROUT = 66 (50mA) 20ms/div
REGION OF STABLE COUT ESR vs. LOAD CURRENT
MAX1792-11
LOAD-TRANSIENT RESPONSE
MAX1792-12
100
10 COUT ESR () COUT = 3.3F 1 COUT = 10F 0.1 STABLE REGION VIN = VOUT + 500mV CIN = 10F ROUT = 660 TO 6.6 (5mA TO 500mA) 0 100 200 300 400 500 600 700 800 10s/div
IOUT 500mA/div
VOUT 20mV/div
0.01 LOAD CURRENT (mA)
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500mA Low-Dropout Linear Regulator in MAX MAX1792
Typical Operating Characteristics (continued)
(MAX1792EUA33, VIN = VOUT + 500mV, SHDN = IN, CIN = 1F, COUT = 3.3F, TA = +25C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE NEAR DROPOUT
MAX1792-13
LINE-TRANSIENT RESPONSE
MAX1792-14
IOUT 500mA/div
6V VIN 1V/div 3V
VOUT 50mV/div VIN = VOUT + 100mV CIN = 10F ROUT = 660 TO 6.6 (5mA TO 500mA) 20s/div 100s/div VOUT 10mV/div
SHUTDOWN WAVEFORM
MAX1792-15
RST WAVEFORM
MAX1792-16
2V VSHDN 1V/div 0 3V VOUT 1V/div 0 ROUT = 6.6 (500mA) 20s/div ROUT = 66 (50mA) 20ms/div
5V VIN 2.5V/div 0 VOUT 2V/div 0 VRST 2V/div 0
Pin Description
PIN 1, 2 NAME IN FUNCTION Regulator Input. Supply voltage can range from +2.5V to +5.5V. Bypass with a 1F capacitor to GND (see Capacitor Selection and Regulator Stability). Connect both input pins together externally. Open-Drain Active-Low Reset Output. RST remains low while the output voltage (VOUT) is below the reset threshold and for at least 4ms after VOUT rises above the reset threshold. Connect a 100k pullup resistor to OUT to obtain an output voltage. Active-Low Shutdown Input. A logic low reduces supply current to 0.1A. In shutdown, the RST output is low and OUT is pulled low through an internal 5k resistor. Connect to IN for normal operation. Ground. This pin and the exposed pad also function as a heatsink. Solder both to a large pad or to the circuit-board ground plane to maximize power dissipation. Voltage-Setting Input. Connect to GND for preset output. Connect to a resistive divider between OUT and GND to set the output voltage between 1.25V and 5.0V. Regulator Output. Sources up to 500mA. Bypass with a 3.3F low-ESR capacitor to GND. Use a 4.7F capacitor for output voltages below 2V. Connect both output pins together externally.
3
RST
4 5 6 7, 8
SHDN GND SET OUT
6
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500mA Low-Dropout Linear Regulator in MAX MAX1792
VIN = +2.5V TO +5.5V CIN 1F IN IN
THERMAL SENSOR MOSFET DRIVER WITH I LIM OUT VOUT = 1.25V TO 5.0V COUT 3.3F
ON OFF
SHDN OUT SHUTDOWN LOGIC ERROR AMPLIFIER VREF 1.25V 5k
LOGIC SUPPLY VOLTAGE (VOUT) RRST 100k TO C RST
R1
MAX1792
SET DELAY TIMER R2 93% VREF 100mV GND
Figure 1. Functional Diagram
Detailed Description
The MAX1792 is a low-dropout, low-quiescent-current linear regulator designed primarily for battery-powered applications. The device supplies loads up to 500mA and is available with preset output voltages. As illustrated in Figure 1, the MAX1792 consists of a 1.25V reference, error amplifier, P-channel pass transistor, and internal feedback voltage-divider. The 1.25V reference is connected to the error amplifier, which compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass-transistor gate is pulled lower, which allows more current to pass to the output and increases the output voltage. If the feedback voltage is too high, the passtransistor gate is pulled up, allowing less current to pass to the output.
The output voltage is fed back through either an internal resistive divider connected to OUT or an external resistor network connected to SET. The Dual Mode comparator examines VSET and selects the feedback path. If VSET is below 50mV, the internal feedback path is used and the output is regulated to the factory-preset voltage. Additional blocks include an output current limiter, thermal sensor, and shutdown logic.
Internal P-Channel Pass Transistor
The MAX1792 features a 0.25 P-channel MOSFET pass transistor. Unlike similar designs using PNP pass transistors, P-channel MOSFETs require no base drive, which reduces quiescent current. PNP-based regulators also waste considerable current in dropout when the pass transistor saturates, and use high base-drive currents under large loads.
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500mA Low-Dropout Linear Regulator in MAX MAX1792
Reset Output
R1 = R2 IN V IN = +2.5V TO +5.5V IN OUT OUT VOUT VOUT 1.25V -1
CIN 1F ON SHDN OFF
MAX1792
COUT 3.3F
R1
The reset output (RST) pulls low when OUT is less than 93% of the nominal regulation voltage. Once OUT exceeds 93% of the nominal voltage, RST goes high impedance after 4ms. RST is an open-drain N-channel output. To obtain a voltage output, connect a pullup resistor from RST to OUT. A 100k resistor works well for most applications. RST can be used as a power-on-reset (POR) signal to a microcontroller (C), or drive an external LED to indicate power failure. When the MAX1792 is shut down, RST is held low independent of the output voltage. If unused, leave RST grounded or unconnected.
SET
Current Limit
R2 RST GND
The MAX1792 monitors and controls the pass transistor's gate voltage, limiting the output current to 0.8A (typ). This current limit doubles when the output voltage is within 4% of the nominal value to improve performance with large load transients. The output can be shorted to ground for an indefinite period of time without damaging the part.
Figure 2. Adjustable Output Using External Feedback Resistors
Thermal Overload Protection
Thermal overload protection limits total power dissipation in the MAX1792. When the junction temperature exceeds TJ = +170C, a thermal sensor turns off the pass transistor, allowing the device to cool. The thermal sensor turns the pass transistor on again after the junction temperature cools by 20C, resulting in a pulsed output during continuous thermal overload conditions. Thermal overload protection protects the MAX1792 in the event of fault conditions. For continuous operation, do not exceed the absolute maximum junction-temperature rating of TJ = +150C.
The MAX1792 does not suffer from these problems and consumes only 110A of quiescent current under heavy loads as well as in dropout.
Output Voltage Selection
The MAX1792's Dual Mode operation allows operation in either a preset voltage mode or an adjustable mode. Connect SET to GND to select the preset output voltage. The two-digit part number suffix identifies the output voltage (see Selector Guide). For example, the MAX1792EUA33 has a preset 3.3V output voltage. The output voltage may also be adjusted by connecting a voltage-divider from OUT to SET to GND (Figure 2). Select R2 in the 25k to 100k range. Calculate R1 with the following equation: R1 = R2 [(VOUT / VSET) - 1] where VSET = 1.25V and VOUT may range from 1.25V to 5.0V.
Operating Region and Power Dissipation
The MAX1792's maximum power dissipation depends on the thermal resistance of the IC package and circuit board, the temperature difference between the die junction and ambient air, and the rate of air flow. The power dissipated in the device is P = IOUT x (VIN - VOUT). The maximum allowed power dissipation is 1.3W or: PMAX = (TJ(MAX) - TA) / ( JC + CA) where TJ - TA is the temperature difference between the MAX1792 die junction and the surrounding air, JC is the thermal resistance from the junction to the case, and CA is the thermal resistance from the case through the PC board, copper traces, and other materials to the surrounding air. The MAX1792 package features an exposed thermal pad on its underside. This pad lowers the thermal resistance of the package by providing a direct heat con-
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the output is disconnected from the input and supply current drops to 0.1A. When in shutdown, RST pulls low and OUT is discharged through an internal 5k resistor. The capacitance and load at OUT determine the rate at which VOUT decays. SHDN can be pulled as high as +6V, regardless of the input and output voltage.
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500mA Low-Dropout Linear Regulator in MAX
0.7 POWER-MAX PACKAGE OPERATING REGION AT TJ(MAX) = +150C 0.6 CONTINUOUS CURRENT LIMIT 0.5 TA = +50C
response. Surface-mount ceramic capacitors have very low ESR and are commonly available in values up to 10F. Connect CIN and COUT as close to the MAX1792 as possible to minimize the impact of PC board trace inductance.
MAX1792
MAXIMUM OUTPUT CURRENT (A)
Noise, PSRR, and Transient Response
TA = +85C
0.4
0.3
TA = +70C
0.2
0.1
MAXIMUM SUPPLY VOLTAGE LIMIT (VOUT = 1.25V) 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
The MAX1792 is designed to operate with low dropout voltages and low quiescent currents in battery-powered systems while still maintaining good noise, transient response, and AC rejection. See the Typical Operating Characteristics for a plot of Power-Supply Rejection Ratio (PSRR) vs. Frequency. When operating from noisy sources, improved supply-noise rejection and transient response can be achieved by increasing the values of the input and output bypass capacitors and through passive filtering techniques. The MAX1792 load-transient response graphs (see Typical Operating Characteristics) show two components of the output response: a DC shift from the output impedance due to the load current change, and the transient response. A typical transient response for a step change in the load current from 5mA to 500mA is 18mV. Increasing the output capacitor's value and decreasing the ESR attenuates the overshoot.
0 INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 3. Power Operating Regions: Maximum Output Current vs. Supply Voltage
duction path from the die to the PC board. Additionally, the MAX1792's ground pin (GND) performs the dual function of providing an electrical connection to system ground and channeling heat away. Connect the exposed backside pad and GND to the system ground using a large pad or ground plane, or multiple vias to the ground plane layer. The MAX1792 delivers up to 0.5A(RMS) and operates with input voltages up to 5.5V, but not simultaneously. High output currents can only be sustained when inputoutput differential voltages are low, as shown in Figure 3.
TYPICAL VDROPOUT LIMIT
Input-Output (Dropout) Voltage
A regulator's minimum input-to-output voltage differential (dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the MAX1792 uses a P-channel MOSFET pass transistor, its dropout voltage is a function of drain-tosource on-resistance (RDS(ON)) multiplied by the load current (see Typical Operating Characteristics): VDROPOUT = VIN - VOUT = RDS(ON) x IOUT The MAX1792 ground current remains below 150A in dropout. Note: The MAX1792 has an exposed thermal pad on the bottom side of the package.
Applications Information
Capacitor Selection and Regulator Stability
Capacitors are required at the MAX1792's input and output for stable operation over the full temperature range and with load currents up to 500mA. Connect a 1F capacitor between IN and ground and a 3.3F low equivalent series resistance (ESR) capacitor between OUT and ground. For output voltages less than 2V, use a 4.7F low-ESR output capacitor. The input capacitor (CIN) lowers the source impedance of the input supply. Reduce noise and improve load-transient response, stability, and power-supply rejection by using larger output capacitors such as 10F. The output capacitor's (COUT) ESR affects stability and output noise. Use output capacitors with an ESR of 0.1 or less to ensure stability and optimum transient
Chip Information
TRANSISTOR COUNT: 845
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500mA Low-Dropout Linear Regulator in MAX MAX1792
Package Information
8LUMAXD.EPS
Note: MAX1792 has an exposed thermal pad on the bottom side of the package
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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