Production Data
WM8326
PARAMETER
VOUT Accuracy
Line Regulation
SYMBOL
VOUT_ACC
VOUT LINE
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I
LOAD = 1mA
-2.5
+2.5
%
V
IN = (VOUT + 0.5) to 5.5V, ILOAD = 75mA
0.025
%/V
Note that VIN must be >= 1.71V
Load Regulation
Dropout Voltage
I
I
LOAD =1mA to 150mA
VOUT LOAD
VIN - VOUT
0.004
135
100
90
%/mA
mV
LOAD =100mA, VOUT =1.8V
ILOAD =100mA, VOUT =2.5V
ILOAD =100mA, VOUT =3.3V
Undervoltage
level
VOUT Falling
VOUT
IQ
%
93
Quiescent
Current
Normal mode, no load
Low Power mode, no load
ILOAD = 1mA to 150mA
110
70
A
IQ (no load) + 0.1% of load
Power Supply
Rejection Ratio
ILOAD = 75mA, <= 1kHz
PSRR
VOUT
73
69
dB
VRMS
m
ILOAD = 75mA, 10kHz
ILOAD = 75mA, 100kHz
49
Output noise
voltage
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 1mA
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 10mA
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 100mA
30
32
32
On Resistance
(Switch mode)
VIN = 1.71V, ILOAD = 100mA
RDSON
1000
930
610
430
250
VIN = 1.8V, ILOAD = 100mA
VIN = 2.5V, ILOAD = 100mA
VIN = 3.5V, ILOAD = 100mA
Current Limit
VOUT = 0V
ICL
mA
(Switch mode)
Start-up time
No load, Output cap 4.7 µF, 90% of VOUT
No load, Output cap 4.7 µF, 10% of VOUT
tstart_up
70
s
Shutdown time
tshut_down
10
ms
LDO11
Unless otherwise noted: VIN = 3.8V, VOUT = 1.2V, TJ = -40°C to +125°C; Typical values are at TJ = +25ºC
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Programmable
Output Voltage
VOUT
0.8
1.55
V
VOUT Step Size
Output Current
VOUT_STEP
IOUT
50
mV
mA
PVDD < 3.1V
0
0
10
25
+4
PVDD ≥ 3.1V
VOUT Accuracy
Line Regulation
Load Regulation
V
V
IN = 2.7 to 5.5V ; ILOAD = 100µA
IN = 2.7 to 5.5V; ILOAD = 1mA
VOUT
VOUT LINE
VOUT LOAD
IQ
-4
%
%/V
%/mA
A
0.4
0.2
2.5
I
LOAD = 100µA to 10mA
Quiescent
Current
No load
Start-up time
No load, Output cap 0.1 µF, 90% of VOUT
No load, Output cap 0.1 µF, 10% of VOUT
tstart_up
0.3
0.3
1
1
ms
ms
Shutdown time
tshut_down
PD, June 2012, Rev 4.0
21
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
