RT9169/H
100mA, 4μA Quiescent Current CMOS LDO Regulator
μ
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
μ
Ultra-Low Quiescent Current: 4μA
Low Dropout: 450mV at 100mA
Wide Operating Voltage Ranges: 2V to 6V
Current Limiting Protection
Only 1μF Output Capacitor Required for Stability
μ
High Power Supply Rejection Ratio
RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9169/H
-
Package Type
ZL : TO-92 (L-Type)
ZT : TO-92 (T-Type)
X : SOT-89
V : SOT-23-3
VL : SOT-23-3 (L-Type)
B : SOT-23-5
Applications
Battery-Powered Equipment
Palmtops, Notebook Computers
Hand-held Instruments
PCMCIA Cards
Pin Configurations
(TOP VIEW)
VIN
3
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
12 : 1.2V
13 : 1.3V
:
49 : 4.9V
50 : 5.0V
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 require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
GND
1
VIN
3
2
2
VOUT
GND
GND
VOUT
SOT-23-3
SOT-23-3
(L-Type)
VOUT
5
NC
4
2
3
2
3
VIN GND EN/EN
VIN VOUT
(TAB)
SOT-23-5
SOT-89
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
3
2
1
VOUT
GND
VIN
TO-92 (L-Type)
3
2
1
GND
VIN
VOUT
TO-92 (T-Type)
DS9169/H-14 April 2011
www.richtek.com
1
RT9169/H
Typical Application Circuit
RT9169
V
IN
C
IN
1uF
VIN
VOUT
GND
V
OUT
+
+
C
OUT
1uF
V
IN
C
IN
1uF
VIN
EN/EN
VOUT
RT9169/H
GND
V
OUT
RT9169
RT9169H
Chip Enable Chip Enable
+
+
C
OUT
1uF
Function Block Diagram
VIN
Functional Pin Description
Pin Name
VIN
Pin Function
Power Input
Output Voltage
Ground
Chip Enable Control Input
+
-
EN/EN
Current
Limit
VOUT
VOUT
GND
EN/EN
Absolute Maximum Ratings
(Note 1)
Input Voltage ---------------------------------------------------------------------------------------------------------- 7V
Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-3 --------------------------------------------------------------------------------------------------------------- 0.4W
SOT-23-5 --------------------------------------------------------------------------------------------------------------- 0.4W
SOT-89 ----------------------------------------------------------------------------------------------------------------- 0.571W
TO-92 ------------------------------------------------------------------------------------------------------------------- 0.625W
Junction Temperature ----------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260°C
Storage Temperature Range ---------------------------------------------------------------------------------------
−65°C
to 150°C
Package Thermal Resistance (Note 2)
SOT-23-3,
θ
JA
--------------------------------------------------------------------------------------------------------- 250°C/W
SOT-23-5,
θ
JA
--------------------------------------------------------------------------------------------------------- 250°C/W
SOT-89,
θ
JA
----------------------------------------------------------------------------------------------------------- 175°C/W
TO-92,
θ
JA
------------------------------------------------------------------------------------------------------------- 160°C/W
ESD Susceptibility (Note 3)
HBM (Human Body Mode) ----------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions
(Note 4)
Junction Temperature Range --------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------
−40°C
to 85°C
www.richtek.com
2
DS9169/H-14 April 2011
RT9169/H
Electrical Characteristics
(V
IN
= 5.5V, C
IN
= 1μF, C
OUT
= 1μF, T
A
= 25°C, unless otherwise specified)
Parameter
Input Voltage Range
Output Voltage Accuracy
Maximum Output Current
Current Limit
GND Pin Current
Symbol
V
IN
ΔV
OUT
I
MAX
I
LIM
I
G
I
L
= 1mA
V
IN
= V
OUT
+ 0.6V, V
IN
≥
3.6V
I
L
= 100mA
No Load
I
OUT
= 100mA
I
OUT
= 1mA, V
IN
≥
3.6V
Dropout Voltage
V
DROP
I
OUT
= 50mA, V
IN
≥
3.6V
I
OUT
= 100mA, V
IN
≥
3.6V
Line Regulation
Load Regulation
Output Noise
Ripple Rejection
Standby
Current
EN/EN
RT9169/H (SOT-23-5)
Logic High
V
IL
V
IH
ΔV
LINE
V
IN
= (V
OUT
+ 0.3V) to 6V,
V
IN
≥
3.6V, I
OUT
= 1mA
--
--
--
-0.2
--
--
--
--
0.6
--
125
Test Conditions
Min
2
-2
100
150
--
Typ
--
--
--
250
4
4
4
200
450
--
0.01
250
30
0.1
--
--
--
Max
6
+2
--
--
7
10
10
300
600
+0.2
0.04
--
--
1
--
2
--
°C
%/V
%/mA
μV
dB
μA
V
mV
Unit
V
%
mA
mA
μA
μA
ΔV
LOAD
I
LOUT
= 0mA to 100mA
e
NO
PSRR
BW = 100Hz to 50kHz
C
OUT
= 10μF
F = 1kHz, C
OUT
= 1μF
EN = V
IN
or EN = 0
Threshold Logic Low
Thermal Shutdown Protection
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.
θ
JA
is measured in the natural convection at T
A
= 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 V
OUT
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 V
IN
to GND.
DS9169/H-14 April 2011
www.richtek.com
3
RT9169/H
Typical Operating Characteristics
Temperature Stability
3.7
5
Quiescient Current vs. Temperature
V
OUT
= 3.3V
Quiescent Current (
μ
A)
V
OUT
= 1.8V
Output Voltage (V)
3.3
4
2.9
3
2.5
2
2.1
1
V
IN
= 5V
1.7
-50
-25
0
25
50
75
100
125
0
-30
0
30
60
90
120
Temperature
(°C)
Temperature
(°C)
Dropout Voltage (V
IN
-V
OUT
)
0.8
Short Circuit Current
500
Short Circuit Current (mA)
0.7
125°C
Dropout Voltage (V)
0.6
0.5
0.4
0.3
0.2
0.1
400
25°C
300
25°C
125°C
200
100
V
OUT
= 3.3V
0
0
20
40
60
80
100
0
0
1
2
3
4
5
I
LOAD
(mA)
Input/Output Differential (V)
PSRR
0
-10
PSRR
0
-10
50mA
-20
PSRR (dB)
PSRR (dB)
10mA
-20
50mA
10mA
-30
-40
-50
-60
-70
-30
-40
-50
-60
-70
V
IN
= 5V, V
OUT
= 1.8V
C
IN
= 1uF, T
A
= 125°C
C
OUT
= 1uF Electrolytic
Capacitor
10
100
1k
10k
100k
1M
V
IN
= 5V, V
OUT
= 3.3V
C
IN
= 1uF, T
A
= 125°C
C
OUT
= 1uF Electrolytic
Capacitor
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
www.richtek.com
4
DS9169/H-14 April 2011
RT9169/H
Line Transient Response
Output Voltage
Deviation (mV)
200
100
0
V
OUT
= 1.8V
I
OUT
= 50mA
T
A
= 25°C
C
OUT
= 1uF Electrolytic
Line Transient Response
Output Voltage
Deviation (mV)
200
V
OUT
= 3.3V
100 I
OUT
= 50mA
0
T
A
= 25°C
C
OUT
= 1uF Electrolytic
300
Input Voltage
Deviation (V)
Input Voltage
Deviation (V)
≈
6
5
4
3
≈
≈
6
5
4
3
≈
Time (1ms/Div)
Time (1ms/Div)
Load Transient Response
Output Voltage
Deviation (mV)
Output Voltage
Deviation (mV)
V
IN
= 5V
20 V
OUT
= 1.8V
T
A
= 25°C
0
−20
C
IN
= 1uF Ceramic
C
OUT
= 1uF Ceramic
Load Transient Response
V
IN
= 5V
50 V
OUT
= 1.8V
T
A
= 25°C
0
−50
C
IN
= 1uF Ceramic
C
OUT
= 1uF Ceramic
≈
100
50
1
−50
≈
200
100
10
−100
Load
Current (mA)
Load
Current (mA)
Time (500us/Div)
Time (500us/Div)
100
Load Transient Response
Output Voltage
Deviation (mV)
C
IN
= 1uF Ceramic
C
OUT
= 1uF Ceramic
100
Load Transient Response
C
IN
= 1uF Ceramic
C
OUT
= 1uF Ceramic
Output Voltage
Deviation (mV)
V
IN
= 5V
50 V
OUT
= 3.3V
T
A
= 25°C
0
−50
V
IN
= 5V
50 V
OUT
= 3.3V
T
A
= 25°C
0
−50
≈
100
50
1
−50
≈
200
100
10
−100
≈
Load
Current (mA)
Time (500us/Div)
Load
Current (mA)
Time (500us/Div)
DS9169/H-14 April 2011
www.richtek.com
5
