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RT9165
150mA 3-Terminal Positive Regulator
General Description
The RT9165 is a positive low dropout regulator designed for applications requiring low dropout performance at full rated current. The device is available in fixed output voltage of 5.0V or 8.0V. The RT9165 provides excellent regulation over line, load, and temperature variations. The other features include low dropout performance at a maximum of 1.3V at 150mA, fast transient response, internal current limiting, and thermal shutdown protection of the output devices. The RT9165 is a three-terminal regulator compatible with industrial LM78L05/L08 and available in surface mount SOT-89 package.
Features
Low Dropout, Maximum 1.3V at 150mA Fast Transient Response 3% Total Output Regulation 0.5% Line Regulation 0.5% Load Regulation SOT-89 and TO-92 Packages RoHS Compliant and 100% Lead (Pb)-Free
Applications
5V or 8V Output Linear Regulator Consumer Equipment Power Supply
Ordering Information
RT9165Package Type Z : TO-92 X : SOT-89 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Output Voltage Default : 5.0V 80 : 8.0V
Pin Configurations
(TOP VIEW)
3 2
VIN GND VOUT
RT9165-CZ TO-92
Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100%matte tin (Sn) plating.
VOUT GND VIN (TAB) 1 2 3
RT9165CX SOT-89
Marking Information
For marking information, contact our sales representative directly or through a RichTek distributor located in your area, otherwise visit our website for detail.
DS9165-15 March 2007
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RT9165
Typical Application Circuit
RT9165 VOUT GND
VIN
VIN
CIN 10uF
VOUT COUT 10uF
+
+
Function Block Diagram
VIN Buffer Amplifier Q2 Thermal Shutdown Q1 R4 R3 VOUT R1 R2
Error Amplifier
+
-
Current Limiting Sensor
Functional Pin Description
Pin Name VOUT GND VIN Pin Function Output Voltage Ground Power Input
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RT9165
Absolute Maximum Ratings
Input Voltage ------------------------------------------------------------------------------------------------------------ 16V Power Dissipation, PD @ TA = 25C TO-92 --------------------------------------------------------------------------------------------------------------------- 0.625W SOT-89 ------------------------------------------------------------------------------------------------------------------- 0.571W Package Thermal Resistance (Note4) TO-92, JA --------------------------------------------------------------------------------------------------------------- 160C/W SOT-89, JA ------------------------------------------------------------------------------------------------------------- 175C/W Operating Junction Temperature Range -------------------------------------------------------------------------- -40C to 125C Storage Temperature Range ---------------------------------------------------------------------------------------- -65C to 150C
Electrical Characteristics
(VIN = 7.0V, TA = 25C, unless otherwise specified)
Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temperature Coefficient Temperature Stability RMS Output Noise (Note3) (Note1) (Note1) (Note1) (Note2) RT9165 RT9165-80
Symbol VOUT VLINE VLOAD VDROP ILIM IQ TC TS
Test Conditions VIN = VOUT + 2V VIN = VOUT + 2V ~ 16V IL = 0~150mA VOUT =1%
Min 4.900 7.840 ---300 -----
Typ 5.000 8.000 0.1 0.2 1.2 -4.5 0.005 0.5 0.003
Max 5.100 8.160 0.5 0.5 1.3 -8 ----
Units V % % V mA mA %/C % %/VOUT
Note 1. Low duty cycle pulse testing with Kelvin connections required. Note 2. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV. Note 3. Bandwidth of 10Hz to 10kHz. Note 4. JA is measured in the natural convection at T A = 25C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard.
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RT9165
Typical Operating Characteristics
PSRR
0 -10 -20
1.4
Dropout Voltage (VIN-VOUT)
TA = 25C
1.2
Dropout Voltage (V)
PSRR (dB)
-30 -40 -50 -60 -70 -80
CIN = 1nF COUT = 10uF Electrolytic Capacitor VIN = 8V VOUT = 5V
TJ = 25C
100mA
1 0.8 0.6 0.4 0.2
TJ = 125C
10mA
VOUT = 5V
0
10
100
1K
10K
100K
1M
10M
0
25
50
75
100
125
150
Frequency (Hz)
I OUT(mA)
Short Circuit Current
0.4
5.2
Temperature Stability
125C
Short Circuit Current (A)
Output Voltage (V)
0.3
5.1
VOUT = 5V
5
25C
0.2
4.9
0.1
4.8
0 5 6 7 8 9 10
4.7 -50 -25 0 25 50 75 100 125
Input Voltage (V)
Temperature (C)
Load Transient Response
60
Load Transient Response
60
Output Voltage Deviation (mV)
0 -20 -40
Output Voltage Deviation (mV)
CIN = 10uF 40 COUT = 10uF Electrolytic VIN = 8V, VOUT = 5V 20
TA = 25C
CIN = 10uF 40 COUT = 10uF Electrolytic VIN = 8V, VOUT = 5V 20 0 -20 -40
TA = 25C
Load Current (mA)
100 10 -100
Load Current (mA)

50 1 -50
Time (100us/Div) www.richtek.com 4
Time (100us/Div) DS9165-15 March 2007
RT9165
Input Voltage (V)
Line Transient Response
5.5 COUT = 10uF Electrolytic 4.5 VOUT = 5V, IOUT = 0.1A 3.5
1500
Output Noise
CIN = 10uF Electrolytic
1000
TA = 25C
Load = 10mA
Output Noise (uv)
VOUT+ 2.5
500 0 -500 -1000
Output Voltage Deviation (mV)
20 0 -20 -40
-1500
Time (10us/Div)
0
2
4
6
8
10
Time(ms)
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RT9165
Outline Dimension
D
A
E
L
e D1
b
C
A1
Symbol A A1 b C D D1 E e L
Dimensions In Millimeters Min 3.175 1.143 0.406 0.406 4.445 3.429 4.318 1.143 12.700 Max 4.191 1.372 0.533 0.533 5.207 5.029 5.334 1.397
Dimensions In Inches Min 0.125 0.045 0.016 0.016 0.175 0.135 0.170 0.045 0.500 Max 0.165 0.054 0.021 0.021 0.205 0.198 0.210 0.055
3-Lead TO-92 Plastic Package
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RT9165
D D1
A
C
B
C1 e e H A b b
b1
Symbol A b B b1 C C1 D D1 e H
Dimensions In Millimeters Min 1.397 0.356 2.388 0.406 3.937 0.787 4.394 1.397 1.448 0.356 Max 1.600 0.483 2.591 0.533 4.242 1.194 4.597 1.753 1.549 0.432
Dimensions In Inches Min 0.055 0.014 0.094 0.016 0.155 0.031 0.173 0.055 0.057 0.014 Max 0.063 0.019 0.102 0.021 0.167 0.047 0.181 0.069 0.061 0.017
3-Lead SOT-89 Surface Mount Package
Richtek Technology Corporation
Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com
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