Production Data
WM8352
7.4 LDO REGULATOR ELECTRICAL CHARACTERISTICS
Test Conditions
VIN = 3.7, VOUT = 1.8V, TA = +25ºC unless otherwise noted.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
LDO1 to LDO4 (WM8352 in ACTIVE State)
After start-up
1.6
0.9
3.7
5.5
3.3
V
Input Voltage
VIN
Output voltage
VOUTn
V
%
Regulation Accuracy
Dropout Voltage
+/-3.3
200
100mA, VIN < 1.8V
100mA, VIN < 2.7V
mV
700
Load current
100
150
mA
μA
μA
dB
Quiescent Current
Leakage Current
27
1% of load
<2.5
-50
Power Supply Rejection Ratio
PSRR
1kHz, VOUT =1.8V,
25mA load
100Hz
ON Resistance in switch mode
LDO1 (WM8352 in OFF State)
Output Voltage
RON
LDOn_SWI = 1
2
3.5
Ω
VOUT1
0.95 ×
VOUT1 in
ACTIVE
V
PD, February 2011, Rev 4.4
21
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
