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Logic Controlled, High-Side Power Switch with Reverse Current Blocking ADP195
FEATURES
Low RDSON of 65 m @ 1.8 V Low input voltage range: 1.1 V to 3.6 V >1 A continuous operating current @ 85C Built-in level shift for control logic that can be operated by 1.2 V logic Low 10 A (maximum) ground current @ 3.6 V Low 1 A (typical) ground current @ 1.8 V Low 4 A (maximum) reverse current @ 3.6 V Reverse current blocking Ultralow shutdown current: <0.7 A Ultrasmall 1.0 mm x 1.0 mm, 4-ball, 0.5 mm pitch WLCSP
TYPICAL APPLICATIONS CIRCUIT
ADP195
VIN + - GND REVERSE POLARITY PROTECTION VOUT
ON
EN OFF
LEVEL SHIFT AND SLEW RATE CONTROL
LOAD
08679-001
Figure 1.
GENERAL DESCRIPTION APPLICATIONS
Mobile phones Digital cameras and audio devices Portable and battery-powered equipment
The ADP195 is a high-side load switch designed for operation between 1.1 V to 3.6 V and protected against reverse current flow from output to input. This load switch provides power domain isolation helping extended power domain isolation. The device contains a low on-resistance, P-channel MOSFET that supports over 500 mA of continuous current and minimizes power loss. The low 10 A of quiescent current and ultralow shutdown current make the ADP195 ideal for battery-operated portable equipment. The built-in level shifter for enable logic makes the ADP195 compatible with many processors and GPIO controllers. In addition to operating performance, the ADP195 occupies minimal printed circuit board (PCB) space with an area of less than 1.0 mm2 and a height of 0.60 mm. It is available in an ultrasmall 1 mm x 1 mm, 4-ball, 0.5 mm pitch WLCSP.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2010 Analog Devices, Inc. All rights reserved.
ADP195 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Applications Circuit............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Diagram ........................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 Typical Performance Characteristics ..............................................6 Theory of Operation .........................................................................9 Applications Information .............................................................. 10 Ground Current .......................................................................... 10 Enable Feature ............................................................................ 10 Timing ......................................................................................... 11 Outline Dimensions ....................................................................... 12 Ordering Guide .......................................................................... 12
REVISION HISTORY
3/10--Revision 0: Initial Version
Rev. 0 | Page 2 of 12
ADP195 SPECIFICATIONS
VIN = 1.8 V, VEN = VIN, IOUT = 200 mA, TA = 25C, unless otherwise noted. Table 1.
Parameter INPUT VOLTAGE RANGE EN INPUT EN Input Threshold EN Input Pull-Down Current VIN Shutdown Current REVERSE BLOCKING VOUT Current Hysteresis CURRENT Ground Current Symbol VIN VIH IEN Conditions TJ = -40C to +85C 1.1 V VIN < 1.8 V, TJ = -40C to +85C 1.8 V VIN 3.6 V, TJ = -40C to +85C VIN = 1.8 V VEN = 0 V, VIN = 0 V, VOUT = 3.6 V VEN = 0 V, VIN = 0 V, VOUT = 3.6 V |VIN - VOUT| IGND VOUT = 0, includes VEN pull-down and reverse blocking bias current, VIN = 3.6 V, TJ = -40C to +85C VOUT = 0, includes VEN pull-down and reverse blocking bias current, VIN = 1.8 V VEN = GND (includes reverse blocking bias current), VOUT = 0 V VEN = GND, TJ = -40C to +85C, VOUT = 0 V VIN = 3.6 V, ILOAD = 200 mA, VEN = 3.6 V VIN = 2.5 V, ILOAD = 200 mA, VEN = 2.5 V VIN = 1.8 V, ILOAD = 200 mA, VEN = 1.8 V VIN = 1.8 V, ILOAD = 200 mA, VEN = 1.8 V, TJ = -40C to +85C VIN = 1.5 V, ILOAD = 200 mA, VEN = 1.5 V VIN = 1.2 V, ILOAD = 200 mA, VEN = 1.2 V VOUT TURN-ON DELAY TIME Turn-On Delay Time tON_DLY VIN = 1.8 V, ILOAD = 200 mA, VEN = 1.8 V, CLOAD = 1 F VIN = 3.6 V, ILOAD = 200 mA, VEN = 3.6 V, CLOAD = 1 F Min 1.1 0.29 0.45 500 -10 4 75 10 1 0.7 5 0.050 0.055 0.065 0.095 0.075 0.100 5 1.5 Typ Max 3.6 1.0 1.2 Unit V V nA nA A mV A A A A s s
Off State Current VIN to VOUT RESISTANCE
IOFF RDSON
TIMING DIAGRAM
VEN TURN-ON DELAY VOUT TURN-OFF DELAY
90%
10% TURN-ON RISE TURN-OFF FALL
08679-002
Figure 2. Timing Diagram
Rev. 0 | Page 3 of 12
ADP195 ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter VIN to GND VOUT to GND EN to GND Continuous Drain Current TA = 25C TA = 85C Continuous Diode Current Storage Temperature Range Operating Junction Temperature Range Soldering Conditions Rating -0.3 V to +4.0 V -0.3 V to VIN -0.3 V to +4.0 V 2 A 1.1 A -50 mA -65C to +150C -40C to +125C JEDEC J-STD-020
Table 3. Typical JB Values
Package 4-Ball WLCSP JB 58.4 Unit C/W
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Rev. 0 | Page 4 of 12
ADP195 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1 A VIN 2 VOUT
TOP VIEW (Not to Scale)
08679-003
B
EN
GND
Figure 3. 4-Ball WLCSP Pin Configuration
Table 4. Pin Function Descriptions
Pin No. A1 A2 B1 B2 Mnemonic VIN VOUT EN GND Description Input Voltage. Output Voltage. Enable Input. Drive EN high to turn on the switch and drive EN low to turn off the switch. Ground.
Rev. 0 | Page 5 of 12
ADP195 TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 1.8 V, VEN = VIN, CIN = COUT = 1 F, TA = 25C, unless otherwise noted.
0.12
IOUT = 10mA IOUT = 100mA IOUT = 200mA IOUT = 500mA IOUT = 1000mA VEN
0.10
1
VOUT
0.08 RDSON ()
0.06
2
0.04
LOAD CURRENT
3
0.02
-40
0
25
TEMPERATURE (C)
85
125
08679-004
CH1 2V BW CH3 1A BW
CH2 2V
BW
M4s T 10%
A CH1
2.32V
Figure 4. RDSON vs. Temperature
0.20 0.18 0.16 0.14
Figure 7. Typical Rise Time and Inrush Current, VIN = 3.6 V, No Load
VEN VOUT
IOUT = 10mA IOUT = 100mA IOUT = 200mA IOUT = 500mA IOUT = 1000mA
1
RDSON ()
0.12 0.10 0.08 0.06 0.04 0.02
08679-005
2
LOAD CURRENT
3
1.6
2.0
2.4 VIN (V)
2.8
3.2
3.6
CH1 2V BW CH3 1A BW
CH2 2V
BW
M4s T 10%
A CH1
2.32V
Figure 5. RDSON vs. Input Voltage (VIN)
0.12 0.11 0.10 0.09
Figure 8. Typical Rise Time and Inrush Current, VIN = 3.6 V, Load = 200 mA
VEN
VOLTAGE DROP (V)
0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01
0
VIN = 1.2 VIN = 1.6 VIN = 1.8 VIN = 2.2 VIN = 2.4 VIN = 2.6 VIN = 3.0 VIN = 3.6
1
VOUT
2
3
LOAD CURRENT
100
200
300
400
500
600
700
800
900
1000
LOAD (mA)
08679-006
CH1 2V BW CH2 1V CH3 100mA BW
BW
M10s T 10%
A CH1
2.32V
Figure 6. Voltage Drop vs. Load Current
Figure 9. Typical Rise Time and Inrush Current, VIN = 1.2 V, No Load
Rev. 0 | Page 6 of 12
08679-010
0
08679-009
0 1.2
08679-007
0
ADP195
5
VEN
4
VOUT
SHUTDOWN CURRENT (A)
1
3
VIN = 1.2V VIN = 1.4V VIN = 2.0V VIN = 2.4V VIN = 2.8V VIN = 3.2V VIN = 3.4V VIN = 3.6V
2
2
LOAD CURRENT
1
3
0
-15
10
35
60
85
110
TEMPERATURE (C)
Figure 10. Typical Rise Time and Inrush Current, VIN = 1.2 V, Load = 200 mA
6
Figure 13. Shutdown Current vs. Temperature
3.5
5
SHUTDOWN CURRENT (A)
IOUT = 10mA IOUT = 100mA IOUT = 200mA IOUT = 300mA IOUT = 500mA
3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -40
GROUND CURRENT (A)
4
VIN = 1.2V VIN = 1.4V VIN = 2.0V VIN = 2.4V VIN = 2.8V VIN = 3.2V VIN = 3.4V VIN = 3.6V
3
2
1
-40
0
25 TEMPERATURE (C)
85
125
08679-008
-15
10
35
60
85
110
TEMPERATURE (C)
Figure 11. Ground Current vs. Temperature
20
Figure 14. Reverse Input Shutdown Current vs. Temperature
9 8
SHUTDOWN CURRENT (A)
16
IOUT = 10mA IOUT = 100mA IOUT = 200mA IOUT = 500mA IOUT = 1000mA
7 6 5 4 3 2 1
GROUND CURRENT (A)
12
VIN = 1.2V VIN = 1.4V VIN = 1.6V VIN = 1.8V VIN = 2.0V VIN = 2.2V VIN = 2.6V VIN = 3.0V VIN = 3.2V VIN = 3.6V
8
4
-15
10
35
60
85
110
VIN (V)
TEMPERATURE (C)
Figure 12. Ground Current vs. Input Voltage (VIN)
Figure 15. Reverse Output Shutdown Current vs. Temperature
Rev. 0 | Page 7 of 12
08679-015
1.6
2.0
2.4
2.8
3.2
3.6
08679-012
0 1.2
0 -40
08679-014
0
08679-013
CH1 2V BW CH2 1V CH3 100mA BW
BW
M10s T 10%
A CH1
2.32V
08679-011
-1 -40
ADP195
4.0 3.5
SHUTDOWN CURRENT (A)
VIN = 1.2V VIN = 1.4V VIN = 2.0V VIN = 2.4V
VIN = 2.8V VIN = 3.2V VIN = 3.4V VIN = 3.6V
3.0 2.5 2.0 1.5 1.0 0.5 0 -40
-15
10
35
60
85
110
TEMPERATURE (C)
Figure 16. Reverse Shutdown Current vs. Temperature
08679-016
Rev. 0 | Page 8 of 12
ADP195 THEORY OF OPERATION
ADP195
VIN GND LEVEL SHIFT AND SLEW RATE CONTROL
08679-025
REVERSE POLARITY PROTECTION VOUT
EN
The ADP195 is a high-side PMOS load switch. It is designed for supply operation between 1.1 V to 3.6 V. The PMOS load switch is designed for low on resistance, 65 m at VIN = 1.8 V and supports greater than 1 A of continuous current. It is a low quiescent current device with a nominal 4 M pull-down resistor on its enable pin (EN). The packaging is a space-saving 1.0 mm x 1.0 mm, 4-ball WLCSP.
Figure 17. Functional Block Diagram
Rev. 0 | Page 9 of 12
ADP195 APPLICATIONS INFORMATION
GROUND CURRENT
The major source for ground current in the ADP195 is an internal 4 M pull-down on the enable pin. Figure 18 shows the typical ground current when VEN = VIN and varies from 1.2 V to 3.6 V.
10
VIN = 1.2V VIN = 1.6V VIN = 2.0V VIN = 2.4V VIN = 2.8V VIN = 3.2V VIN = 3.4V VIN = 3.6V
ENABLE FEATURE
The ADP195 uses the EN pin to enable and disable the VOUT pin under normal operating conditions. As shown in Figure 20, when a rising voltage on VEN crosses the active threshold, VOUT turns on. When a falling voltage on VEN crosses the inactive threshold, VOUT turns off.
2.0 1.8 1.6
8
GROUND CURRENT (A)
6
1.4 1.2 1.0 0.8 0.6 0.4
4
2
0
50
100
150
200
250
300
350
400
450
500
08679-017
0
VOUT (V)
LOAD (mA)
0.2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 VEN (V) 0.8 0.9 1.0 1.1 1.2
08679-019
08679-020
0
Figure 18. Ground Current vs. Load Current
As shown in Figure 19, an increase in quiescent current can occur when VEN VIN. This is caused by the CMOS logic nature of the level shift circuitry as it translates an VEN signal 1.2 V to a logic high. This increase is a function of the VIN - VEN delta.
16 14 12 10 IGND (A) 8 6 4 2 0 VIN = 1.2V VIN = 1.5V VIN = 1.8V VIN = 2.5V VIN = 3.6V
Figure 20. Typical EN Operation
As shown in Figure 20, the EN pin has hysteresis built in. This prevents on/off oscillations that can occur due to noise on the EN pin as it passes through the threshold points. The EN pin active/inactive thresholds derive from the VIN voltage; therefore, these thresholds vary with the changing input voltage. Figure 21 shows the typical EN active/inactive thresholds when the input voltage varies from 1.2 V to 3.6 V.
1.15 1.05 0.95 EN ACTIVE 0.85 0.75 0.65 0.55 0.45 0.35
08679-018
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
TYPICAL EN THRESHOLDS (V)
VEN (V)
EN INACTIVE
Figure 19. Typical Ground Current when VEN VIN
1.20
1.35
1.50
1.65
1.80
1.95
2.10
2.25
2.55
2.70
2.85
3.00
3.15
3.30
3.45
VIN (V)
Figure 21. Typical EN Thresholds vs. Input Voltage (VIN)
Rev. 0 | Page 10 of 12
2.40
3.60
ADP195
TIMING
Turn-on delay is defined as the delta between the time that VEN reaches >1.2 V until VOUT rises to ~10% of its final value. The ADP195 includes circuitry to have typical 5 s turn-on delay at 3.6 V VIN to limit the VIN inrush current. As shown in Figure 22, the turn-on delay is dependent on the input voltage.
5.0 4.5 4.0 3.5 VEN VIN = 1.2V VIN = 1.8V VIN = 2.5V VIN = 3.6V
3 1
VEN
VOUT
2
LOAD CURRENT
VOLTAGE (V)
3.0 2.5 2.0 1.5 1.0 0.5 0 5 10 15 20 TIME (s) 25 30 35 40
08679-021
CH1 2V BW CH2 1V CH3 200mA BW
M4s T 10%
A CH1
2.32V
Figure 24. Typical Rise Time and Inrush Current, CLOAD = 1 F, VIN = 1.8 V, Load = 200 mA
0
The turn-off time is defined as the delta between the time from 90% to 10% of VOUT reaching its final value. It is also dependent on the RC time constant.
5.0 4.5 4.0 3.5
VOLTAGE (V)
Figure 22. Typical Turn-On Delay Time with Varying Input Voltage
VEN VOUT AT 200mA VOUT AT 100mA
The rise time is defined as the delta between the time from 10% to 90% of VOUT reaching its final value. It is dependent on the RC time constant where C = load capacitance (CLOAD) and R = RDSON||RLOAD. Because RDSON is usually smaller than RLOAD, an adequate approximation for RC is RDSON x CLOAD. An input or load capacitor is not needed for the ADP195; however, capacitors can be used to suppress noise on the board. If significant load capacitance is connected, inrush current is a concern.
VEN
3.0 2.5 2.0 1.5 1.0 0.5 0 20 40 TIME (s) 60 80 100
08679-024
0
1
VOUT
Figure 25. Typical Turn-Off Time
2
LOAD CURRENT
3
CH1 2V BW CH2 1V CH3 200mA BW
BW
M4s T 10%
A CH1
2.32V
Figure 23. Typical Rise Time and Inrush Current, CLOAD = 1 F, VIN = 1.8 V, No Load
08679-022
Rev. 0 | Page 11 of 12
08679-023
ADP195 OUTLINE DIMENSIONS
0.990 0.950 0.910 0.370 0.355 0.340 0.640 0.595 0.550 SEATING PLANE 0.340 0.320 0.300 0.50 REF TOP VIEW
(BALL SIDE DOWN)
2
1 A
BALL A1 IDENTIFIER
1.065 1.025 0.985
B
0.270 0.240 0.210
BOTTOM VIEW
(BALL SIDE UP)
Figure 26. 4-Ball Wafer Level Chip Scale Package [WLCSP] (CB-4-4) Dimensions shown in millimeters
ORDERING GUIDE
Model 1 ADP195ACBZ-R7
1
Temperature Range -40C to +85C
Package Description 4-Ball Wafer Level Chip Scale Package [WLCSP]
Package Option CB-4-4
110309-A
0.05 NOM COPLANARITY
Branding 5Y
Z = RoHS Compliant Part.
(c)2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08679-0-3/10(0)
Rev. 0 | Page 12 of 12

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