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NX2139A 데이터시트(PDF) 6 Page - Microsemi Corporation

부품명 NX2139A
상세설명  SINGLE CHANNEL MOBILE PWM AND LDO CONTROLLER
PDF  21 Pages
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제조업체  MICROSEMI [Microsemi Corporation]
홈페이지  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

NX2139A 데이터시트(HTML) 6 Page - Microsemi Corporation

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NX2139A
6
Rev. 2.3
03/19/09
BLOCK DIAGRAM
Figure 2 - Simplified block diagram of the NX2139A
soft
start
VIN
BST(13)
HDRV(12)
LDRV(8)
PGND
SW(11)
PVCC(9)
5V
FET Driver
start
ODB
HD_IN
start
VOUT(1)
0.9*Vref
SS_finished
PGOOD(4)
OCSET(10)
ENSW
/MODE(15)
start
POR
FB(3)
GND(17 PAD)
TON(16)
HD
VREF=0.75V
FBUVLO_latch
R
S
Q
Mini offtime
400ns
OCP_COMP
HD
Diode
emulation
OCP_COMP
0.7*Vref
FB
1.25*Vref/0.7VREF
FB
OVP
FBUVLO_latch
VOUT
Sync
PFM_nonultrasonic
4.3/4.1
VCC(2)
Bias
POR
Disable
Disable_B
0.9*Vref
LDOSS_finished
LDOPG(5)
ENLDO(14)
LDO_POR
LDODRV(7)
LDOFB(6)
0.7*Vref
LDOFBUVLO_latch
LDOFBUVLO_latch
VOUT
VIN
1.5V@2A~5A
1.8V
Thermal
shutdown
soft start
ON time
pulse
genearation
VOUT
MODE
SELECTION
LDO_EN
VCC
1M
1M



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