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WM8321 数据表(PDF) 21 Page - Wolfson Microelectronics plc

部件名 WM8321
功能描述  Processor Power Management Subsystem
PDF  253 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8321 数据表(HTML) 21 Page - Wolfson Microelectronics plc

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Production Data
WM8321
w
PD, February 2012, Rev 4.0
21
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ILOAD = 75mA, 100kHz
49
Output noise
voltage
VOUT
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 1mA
30
VRMS
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 10mA
32
f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 100mA
32
On Resistance
(Switch mode)
RDSON
VIN = 1.71V, ILOAD = 100mA
1000
m
VIN = 1.8V, ILOAD = 100mA
930
VIN = 2.5V, ILOAD = 100mA
610
VIN = 3.5V, ILOAD = 100mA
430
Current Limit
(Switch mode)
ICL
VOUT = 0V
250
mA
Start-up time
tstart_up
No load, Output cap 4.7 µF, 90% of VOUT
70
s
Shutdown time
tshut_down
No load, Output cap 4.7 µF, 10% of VOUT
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
VOUT_STEP
50
mV
Output Current
IOUT
PVDD < 3.1V
0
10
mA
PVDD ≥ 3.1V
0
25
VOUT Accuracy
VOUT
VIN = 2.7 to 5.5V ; ILOAD = 100µA
-4
+4
%
Line Regulation
VOUT LINE
VIN = 2.7 to 5.5V; ILOAD = 1mA
0.4
%/V
Load Regulation
VOUT LOAD
ILOAD = 100µA to 10mA
0.2
%/mA
Quiescent
Current
IQ
No load
2.5
A
Start-up time
tstart_up
No load, Output cap 0.1 µF, 90% of VOUT
0.3
1
ms
Shutdown time
tshut_down
No load, Output cap 0.1 µF, 10% of VOUT
0.3
1
ms



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