L6727 查看數據表（PDF） - STMicroelectronics
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L6727 Datasheet PDF : 22 Pages
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Typical application circuit and block diagram
1
Typical application circuit and block diagram
L6727
1.1
Application circuit
Figure 1. Typical application circuit
VCC = 5V to 12V
CDEC
CP
ROS
ROCSET
5
(*)
VCC
1
BOOT
7
COMP /
DIS / OC
2
UGATE
CF
RF 6
FB
8
PHASE
4
LGATE
RFB
GND
3
D
RD
CBOOT
RgHS
RgLS
VIN = 1.5V to 19V (**)
CHF
HS
L
RSN
LS
CSN
CBULK
Vout
COUT
LOAD
L6727 Reference Schematic
(*) ROCSET not to be connected when VCC > 5V
(**) Up to 12V with Vcc > 5V
1.2
Block diagram
Figure 2. Block diagram
CONTROL LOGIC
& PROTECTIONS
CURRENT READ
& OCP
DISABLE
PWM
300 kHz
OSCILLATOR
L6727
ERROR
AMPLIFIER
+
-
0.8V
HS
VCC
LS
BOOT
UGATE
PHASE
LGATE
GND
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