参数资料
型号: LTC3703EGN-5#TR
厂商: Linear Technology
文件页数: 8/32页
文件大小: 0K
描述: IC REG CTRLR BST PWM VM 16-SSOP
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 330kHz
占空比: 96%
电源电压: 4.1 V ~ 15 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC3703-5
FU CTIO AL DIAGRA
RSET
FSET
2
OVERCURRENT
12 μ A
4 μ A
+
+
50mV
±
5
I MAX
R MAX
RUN/SS
C SS
5
1V
+
CHIP
SD
±
INV
3.2V
UVSD OTSD
MODE/SYNC 1
SYNC
DETECT
EXT SYNC
OSC
+
V CC
D B
COMP
3
FORCED CONTINUOUS
INV
REVERSE
CURRENT
15
14
BOOST
TG
C B
V IN
M1
FB
4
0.8V
+
+ FB
÷
% DC
LIMIT
PWM
+
DRIVE
LOGIC
13
11
SW
DRV CC
R2
R1
V IN 16
+ MIN –
+ MAX –
10
9
BG
BGRTN
M2
V CC
(<15V)
12
0.76V
0.84V
6 INV
L1
OVER
TEMP
BANDGAP
V CC
UVLO
8 GND
V OUT
C OUT
OT SD
0.8V
REFERENCE
INTERNAL
3.2V V CC
UV SD
GN16
V CC
C VCC
37035 FD
OPERATIO
(Refer to Functional Diagram)
The LTC3703-5 is a constant frequency, voltage mode
controller for DC/DC step-down converters. It is designed
to be used in a synchronous switching architecture with
two external N-channel MOSFETs. Its high operating volt-
age capability allows it to directly step down input voltages
up to 60V without the need for a step-down transformer.
For circuit operation, please refer to the Functional
Diagram of the IC and the circuit on the first page of this
data sheet. The LTC3703-5 uses voltage mode control in
which the duty ratio is controlled directly by the error
amplifier output and thus requires no current sense resis-
tor. The V FB pin receives the output voltage feedback and
is compared to the internal 0.8V reference by the error
amplifier, which outputs an error signal at the COMP pin.
37035fa
8
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LTC3703HGN#TRPBF 功能描述:IC REG CTRLR BST PWM VM 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)