Preliminary
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
∆V
OUT
I
MAX
I
LIMIT
I
G
I
L
= 1mA
V
IN
= V
OUT
+ 0.6V, V
IN
≥
3.6V
R
LOAD
= 1Ω
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 Threshold
RT9169-CB
∆V
LINE
V
IN
= (V
OUT
+ 0.3V) to 6V,
V
IN
≥
3.6V, I
OUT
= 1mA
--
--
--
-0.2
--
--
--
--
0.6
Test Conditions
Min
2
-2
100
--
--
Typ
--
--
--
250
4
4
4
200
450
--
0.01
250
50
0.1
1
RT9169
Max
6
+2
--
--
7
10
--
--
--
+0.2
0.04
--
--
1
2
Units
V
%
mA
mA
µA
µA
mV
%/V
%/mA
µV
DB
µA
V
∆V
LOAD
I
LOUT
= 0mA to 100mA
e
NO
PSRR
BW = 100Hz to 50KHz
C
OUT
= 10µF
F = 1KHz, C
OUT
= 10µF
EN = V
IN
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.
DS9169-02 October 2001
www.richtek-ic.com.tw
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
