wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 23

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

Notes
w
Pre-Production
LDO REGULATOR ELECTRICAL CHARACTERISTICS
1.
2.
Test Conditions
Vin = 3.7V, Vout = 1.8V, T
PARAMETER
LDO Regulators - Active LDO Mode
Input Voltage
Output Voltage (see notes)
Regulation accuracy
Dropout voltage
Maximum Load current
Quiescent current
Leakage current
Power supply rejection ratio
LDO Regulators - Current Switch Mode
ON resistance
Vin is the LDO supply voltage, connected to LDO1VDD, LDO2VDD, LDO3VDD and LDO4VDD for LDOs1-4
respectively.
In addition to the limits noted above, the maximum output voltage, Vout, is also a function of the input voltage. This is
a function of the dropout voltage for the applicable operating conditions.
A
= 25
o
C unless otherwise stated.
100Hz, Vout = 1.8v, 25mA load
1kHz, Vout = 1.8v, 25mA load
Iout = 150mA, Vout < 1.8V
Iout = 150mA, Vout > 1.8V
Vin = 3.7V, <250mA load
TEST CONDITIONS
Iout = 0
MIN
2.5
0.9
27
±4%
TYP
700
200
150
700
-50
<1
PP, April 2009, Rev 3.0
1% of load
MAX
400
250
5.5
3.3
WM8400
UNIT
mV
mV
mA
mΩ
µA
µA
dB
V
V
V
23