RT9169/H
100mA, 4μA Quiescent Current CMOS LDO Regulator
General Description
The RT9169/H series are 100mA ultra-low quiescent current CMOS low dropout (LDO) regulator designed for battery-powered equipments. The output voltages range from 1.2V to 5V with 0.1V per step.
The other features include 4μA ultra-low quiescent, low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio.
Features
zUltra-Low Quiescent Current: 4μA
zLow Dropout: 450mV at 100mA
zWide Operating Voltage Ranges: 2V to 6V
zCurrent Limiting Protection
zOnly 1μF Output Capacitor Required for Stability
zHigh Power Supply Rejection Ratio
zRoHS Compliant and 100% Lead (Pb)-Free
Ordering Information |
Applications |
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z Battery-Powered Equipment |
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RT9169/H- |
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Package Type |
z Palmtops, Notebook Computers |
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ZL : TO-92 (L-Type) |
z Hand-held Instruments |
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ZT : TO-92 (T-Type) |
z PCMCIA Cards |
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X : SOT-89 |
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V : SOT-23-3 |
Pin Configurations |
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VL : SOT-23-3 (L-Type) |
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B : SOT-23-5 |
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(TOP VIEW) |
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Lead Plating System |
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P : Pb Free |
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G : Green (Halogen Free and Pb Free) |
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VIN |
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VIN |
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Output Voltage |
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3 |
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3 |
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12 : 1.2V |
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2 |
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2 |
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13 : 1.3V |
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: |
VOUT |
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GND |
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GND VOUT |
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49 : 4.9V |
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SOT-23-3 |
SOT-23-3 (L-Type) |
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50 : 5.0V |
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Chip Enable High (SOT-23-5 Only)
Chip Enable Low
Note :
1.RT9169H package type is available in SOT-23-5 only.
2.Richtek 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.
Marking Information
For marking information, contact our sales representative directly or through a Richtek distributor located in your area.
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VOUT |
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NC |
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5 |
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4 |
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1 |
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2 |
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3 |
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2 |
3 |
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VIN |
GND EN/EN |
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GND |
VIN |
VOUT |
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SOT-23-5 |
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(TAB) |
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SOT-89
3 VOUT 2 GND 1 VIN
TO-92 (L-Type)
3 GND 2 VIN
1 VOUT
TO-92 (T-Type)
DS9169/H-14 April 2011 |
www.richtek.com |
1
RT9169/H
Typical Application Circuit
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RT9169 |
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VIN |
+ |
VIN |
VOUT |
+ |
VOUT |
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CIN |
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GND |
COUT |
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1uF |
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1uF |
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VIN CIN
1uF
RT9169
Chip Enable
+ |
VIN |
VOUT |
+ |
VOUT |
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RT9169/H |
COUT |
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EN/EN |
GND |
1uF |
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RT9169H |
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Chip Enable
Function Block Diagram |
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Functional Pin Description |
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VIN |
Pin Name |
Pin Function |
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VIN |
Power Input |
+ |
Current |
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VOUT |
Output Voltage |
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GND |
Ground |
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- |
Limit |
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EN/EN |
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VOUT |
EN/EN |
Chip Enable Control Input |
Absolute Maximum Ratings (Note 1)
z Input Voltage ---------------------------------------------------------------------------------------------------------- |
7V |
z Power Dissipation, PD @ TA = 25°C |
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SOT-23-3--------------------------------------------------------------------------------------------------------------- |
0.4W |
SOT-23-5--------------------------------------------------------------------------------------------------------------- |
0.4W |
SOT-89 ----------------------------------------------------------------------------------------------------------------- |
0.571W |
TO-92 ------------------------------------------------------------------------------------------------------------------- |
0.625W |
z Junction Temperature ----------------------------------------------------------------------------------------------- |
150°C |
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- |
260°C |
z Storage Temperature Range --------------------------------------------------------------------------------------- |
−65°C to 150°C |
z Package Thermal Resistance (Note 2) |
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SOT-23-3, θJA --------------------------------------------------------------------------------------------------------- |
250°C/W |
SOT-23-5, θJA --------------------------------------------------------------------------------------------------------- |
250°C/W |
SOT-89, θJA ----------------------------------------------------------------------------------------------------------- |
175°C/W |
TO-92, θJA ------------------------------------------------------------------------------------------------------------- |
160°C/W |
z ESD Susceptibility (Note 3) |
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HBM (Human Body Mode) ----------------------------------------------------------------------------------------- |
2kV |
MM (Machine Mode) ------------------------------------------------------------------------------------------------ |
200V |
Recommended Operating Conditions |
(Note 4) |
z Junction Temperature Range -------------------------------------------------------------------------------------- |
−40°C to 125°C |
z Ambient Temperature Range -------------------------------------------------------------------------------------- |
−40°C to 85°C |
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www.richtek.com |
DS9169/H-14 April 2011 |
2
RT9169/H
Electrical Characteristics
(VIN = 5.5V, CIN = 1μF, COUT = 1μF, TA = 25°C, unless otherwise specified)
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Parameter |
Symbol |
Test Conditions |
Min |
Typ |
Max |
Unit |
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Input Voltage Range |
VIN |
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2 |
-- |
6 |
V |
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Output Voltage Accuracy |
VOUT |
IL = 1mA |
-2 |
-- |
+2 |
% |
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Maximum Output Current |
IMAX |
VIN = VOUT + 0.6V, VIN ≥ 3.6V |
100 |
-- |
-- |
mA |
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Current Limit |
ILIM |
IL = 100mA |
150 |
250 |
-- |
mA |
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GND Pin Current |
IG |
No Load |
-- |
4 |
7 |
μA |
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IOUT = 100mA |
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4 |
10 |
μA |
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IOUT = 1mA, VIN ≥ 3.6V |
-- |
4 |
10 |
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Dropout Voltage |
VDROP |
IOUT = 50mA, VIN ≥ 3.6V |
-- |
200 |
300 |
mV |
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IOUT = 100mA, VIN ≥ 3.6V |
-- |
450 |
600 |
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Line Regulation |
VLINE |
VIN = (VOUT + 0.3V) to 6V, |
-0.2 |
-- |
+0.2 |
%/V |
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VIN ≥ 3.6V, IOUT = 1mA |
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Load Regulation |
VLOAD |
ILOUT = 0mA to 100mA |
-- |
0.01 |
0.04 |
%/mA |
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Output Noise |
eNO |
BW = 100Hz to 50kHz |
-- |
250 |
-- |
μV |
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COUT = 10μF |
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Ripple Rejection |
PSRR |
F = 1kHz, COUT = 1μF |
-- |
30 |
-- |
dB |
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Standby |
RT9169/H (SOT-23-5) |
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EN = VIN or EN = 0 |
-- |
0.1 |
1 |
μA |
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Current |
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EN/EN |
Logic High |
VIL |
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0.6 |
-- |
-- |
V |
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Threshold |
Logic Low |
V |
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-- |
-- |
2 |
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IH |
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Thermal Shutdown Protection |
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125 |
-- |
-- |
°C |
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. 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 remain possibility to affect device reliability.
Note 2. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution is highly recommended. Note 4. The device is not guaranteed to function outside its operating conditions.
Application Information
A 1μF (or larger) capacitor is recommended between VOUT and GND for stability. The part may oscillate without the capacitor. Any type of capacitor can be used, but not Aluminum electrolytes when operating below –25°C. The capacitance may be increased without limit.
A 1μF capacitor (or larger) should be placed between VIN to GND.
DS9169/H-14 April 2011 |
www.richtek.com |
3