WM8325 Datasheet, PDF (21/254 Pages) Wolfson Microelectronics plc – Processor Power Management Subsystem

Production Data
PARAMETER
Current Limit
(Switch mode)
Start-up time
Shutdown time
SYMBOL
ICL
V_OUT = 0V
TEST CONDITIONS
t_{start_up}
tshut_down
No load, Output cap 2.2 µF, 90% of VOUT
No load, Output cap 2.2 µF, 10% of VOUT
WM8325
MIN
TYP
MAX
UNIT
230
mA
10
s
10
ms
LDO7, LDO8
Unless otherwise noted: VIN = 3.8V, VOUT = 1.8V, TJ = -40°C to +125°C; Typical values are at TJ = +25ºC
PARAMETER SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
Input Voltage
Programmable
Output Voltage
V_IN
V_OUT
1.71
5.5
1.0
3.5
V_OUT Step Size
Output Current
VOUT_STEP
I_OUT
V_OUT = 1.0V to 1.6V
V_OUT = 1.7V to 3.5V
Normal mode
Low Power mode
50
100
0
200
0
50
V_OUT Accuracy
Line Regulation
Load Regulation
Dropout Voltage
Undervoltage
level
V_{OUT_ACC}
V_{OUT LINE}
VOUT LOAD
V_IN - V_OUT
V_OUT
I_LOAD = 1mA
V_IN = (V_OUT + 0.5) to 5.5V, I_LOAD = 100mA
Note that VIN must be >= 1.71V
ILOAD =1mA to 200mA
I_LOAD =100mA, V_OUT =1.8V
I_LOAD =100mA, V_OUT =2.5V
I_LOAD =100mA, V_OUT =3.3V
V_OUT Falling
-2.5
+2.5
0.025
0.003
95
65
60
93
Quiescent
IQ
Normal mode, no load
110
Current
Low Power mode, no load
70
Power Supply
Rejection Ratio
Output noise
voltage
On Resistance
(Switch mode)
Current Limit
(Switch mode)
PSRR
VOUT
R_DSON
ICL
I_LOAD = 1mA to 200mA
I_LOAD = 100mA, <= 1kHz
ILOAD = 100mA, 10kHz
ILOAD = 100mA, 100kHz
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 1mA
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 10mA
f=10Hz to 100kHz; V_OUT=2.8V, I_LOAD = 100mA
V_IN = 1.71V, I_LOAD = 100mA
V_IN = 1.8V, I_LOAD = 100mA
V_IN = 2.5V, I_LOAD = 100mA
VIN = 3.5V, ILOAD = 100mA
VOUT = 0V
I_Q (no load) + 0.1% of load
70
67
48
30
32
32
550
500
330
250
320
Start-up time
Shutdown time
t_{start_up}
t_{shut_down}
No load, Output cap 4.7 µF, 90% of V_OUT
No load, Output cap 4.7 µF, 10% of V_OUT
50
10
UNIT
V
V
mV
mA
%
%/V
%/mA
mV
%
A
dB
VRMS
m
mA
s
ms
LDO9, LDO10
Unless otherwise noted: V_IN = 3.8V, V_OUT = 1.8V, T_J = -40°C to +125°C; Typical values are at T_J = +25ºC
PARAMETER SYMBOL
TEST CONDITIONS
MIN
TYP
Input Voltage
Programmable
Output Voltage
VIN
V_OUT
1.71
1.0
VOUT Step Size
Output Current
VOUT_STEP
IOUT
VOUT = 1.0V to 1.6V
VOUT = 1.7V to 3.5V
Normal mode
Low Power mode
50
100
0
0
MAX
5.5
3.5
150
50
UNIT
V
V
mV
mA
w
PD, February 2012, Rev 4.0
21