參數(shù)資料
型號: NCP4331DR2G
廠商: ON SEMICONDUCTOR
元件分類: 穩(wěn)壓器
英文描述: Synchronous Buck Controller for High Efficiency Post Regulation
中文描述: SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, SOIC-16
文件頁數(shù): 3/23頁
文件大?。?/td> 195K
代理商: NCP4331DR2G
NCP4331
http://onsemi.com
3
Figure 2. Block Diagram
100 ns
Delay
BST
HS-DRV
HB
VDD
LS-DRV
GND
SYNC
VsyncH /
VsyncL
FB
+
-
Fault
Fault
UVP /
STDWN
COMP
Cramp
CSout
CSin-
CSin+
Soft-Start
ISS
VDD
VDD
Vref
Thermal
Shutdown
RESET
Iramp
Vpwm
(3 V)
Vref
VCC
VDD
Auxiliary
OPAMP
(SINK Only)
Vuvp
RESET dominant
Q high to turn on HS_DRV
Q low to turn off HS_DRV
RESET
Fault
Fault
Fault
Iuvp
SW2 prevents Iuvp from being sourced when an
UVP is detected (programmable hysteresis)
SW2
+
-
7.5 V
ERROR
AMPLIFIER
+
-
+
-
+
-
+
-
+
-
Delay
S
R
Q
S
Q
R
PWM
Latch
Level
Shifter
Bandgap
UVLO
+
+
+
+
+
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