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NX2147 Datasheet(PDF) 6 Page - Microsemi Corporation

Part # NX2147
Description  SINGLE CHANNEL MOBILE PWM CONTROLLER WITH DYNAMIC VOLTAGE ADJUSTMENT
PDF  11 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

NX2147 Datasheet(HTML) 6 Page - Microsemi Corporation

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NX2147
6
Rev. 1.6
03/09/09
Rev. 1.8
12/28/09
BLOCK DIAGRAM
Figure 2 - Simplified block diagram of the NX2147
R1
VIN
BST(13)
HDRV(12)
LDRV(8)
SW(11)
PVCC(9)
5V
FET Driver
start
ODB
HD_IN
start
VOUT(1)
DO(5)
ENSW
/MODE(15)
start
POR
VREF_OC(10)
TON(16)
HD
VREF
FBUVLO_latch
R
S
Q
Mini offtime
400ns
OCP_COMP
HD
Diode
emulation
OCP_COMP
0.7*Vref
FB
1.25*Vref/0.7VREF
VOUT
OVP
FBUVLO_latch
VOUT
Sync
PFM_nonultrasonic
4.3/4.1
VCC(2)
Bias
POR
Disable
Disable_B
VIN
1.8V
Thermal
shutdown
soft start
ON time
pulse
genearation
VOUT
MODE
SELECTION
VCC
1M
1M
AGND(PAD)
PGND(7)
VP(3)
8k
GPIO0(14)
SCHIMTTER
TRIGGER
D1(4)
GPIO1(6)
SCHIMTTER
TRIGGER
R2
VREF_OC
R1+R2



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