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WM8326 датащи(PDF) 16 Page - Wolfson Microelectronics plc

номер детали WM8326
подробное описание детали  Processor Power Management Subsystem
PDF  255 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8326 датащи(HTML) 16 Page - Wolfson Microelectronics plc

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WM8326
Production Data
w
PD, June 2012, Rev 4.0
16
7
ELECTRICAL CHARACTERISTICS
7.1
DC-DC SYNCHRONOUS BUCK CONVERTERS
DC-DC1 and DC-DC2
Unless otherwise noted: VIN = 3.8V, VOUT = 1.2V, MODE = FCCM
(1), TJ = -40°C to +125°C; typical values are at TJ = 25°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Input Voltage
VIN
2.7
5.5
V
Programmable
Output Voltage
VOUT
FSW = 2MHz
0.6
1.8
V
FSW = 4MHz
0.6
1.4
VOUT Step Size
VOUT_STEP
12.5
mV
VOUT Accuracy
VOUT_ACC
VIN = 2.7V to 5.5V, IOUT = 0mA to 2500mA
-2.5
+2.5
%
Undervoltage
margin
VUV
0.6V ≤ VOUT < 0.9V
50
mV
0.9V ≤ VOUT < 1.3V
80
1.3V ≤ VOUT ≤ 1.8V
100
Overvoltage
margin
VOV
0.6V ≤ VOUT ≤ 1.8V
100
mV
Output Current
IOUT
FCCM
(1) and Auto (CCM/DCM
with PS
(2)) Modes
FSW = 2MHz
0
2500
mA
FSW = 4MHz
0
1250
Hysteretic Mode
0
150
LDO Mode
0
10
P-channel
Current Limit
IP_LIM
3650
mA
Quiescent
Current
IQ
IOUT = 0mA, FCCM
(1) and Auto (CCM/DCM with
PS
(2)) Modes (excluding switching losses)
585
A
IOUT = 0mA, Hysteretic Mode
100
IOUT = 0mA, LDO Mode
25
Shutdown
Current
ISD
DCm_ENA = 0
0.01
A
P-channel
On Resistance
RDSP
VIN = VGS = 3.8V, IDCmLX = 100mA
115
m
N-channel
On Resistance
RDSN
VIN = VGS = 3.8V, IDCmLX = -100mA
105
m
Switching
Frequency
FSW
DCm_FREQ = 01
2
MHz
DCm_FREQ = 10
4
Notes:
1.
Forced Continuous Conduction Mode
2.
Continuous / Discontinuous Conduction with Pulse-Skipping Mode



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