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ML4903CT 参数 Datasheet PDF下载

ML4903CT图片预览
型号: ML4903CT
PDF下载: 下载PDF文件 查看货源
内容描述: 高电流同步降压控制器 [High Current Synchronous Buck Controller]
分类和应用: 控制器
文件页数/大小: 12 页 / 163 K
品牌: MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
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ML4903
PIN CONFIGURATION
ML4903
20-Pin TSSOP (T20)
D0
D1
D2
D3
RANGE
SHDN
NC
PWR GOOD
VREF
GND
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
PROTECT
VDD
VCC
P DRV
N DRV
PWR GND
NC
COMP
ISENSE
VFB
PIN DESCRIPTION
PIN
NAME
FUNCTION
PIN
NAME
FUNCTION
1
2
3
4
5
D0
D1
D2
D3
RANGE
LSB input to the DAC which sets the
output voltage
Input to the DAC which sets the
output voltage
Input to the DAC which sets the
output voltage
MSB input to the DAC which sets the
output voltage
Range selection bit for the 2 chord 4-
bit DAC. Logic 1 sets the range at
2.1V to 3.5V with an LSB of 100mV.
Logic 0 sets the range at 1.8V to
2.05V with an LSB of 50mV.
Grounding this pin shuts down the
regulator
9
10
11
12
13
15
16
17
18
V
REF
GND
V
FB
I
SENSE
COMP
PWR GND
N DRV
P DRV
V
CC
Bypass connection for the internal
3.5V reference
Analog signal ground
Output voltage feedback pin
Current sense input
Connection for the compensation and
optional soft-start delay network
Power ground
Synchronous rectifier driver output
Buck switch driver output
Connection point for monitoring the
5V supply to determine the proper
condition of PWR GOOD
12V power supply input
Connection for the integrating current
limit network
6
8
SHDN
PWR GOOD This open drain output goes low
whenever
SHDN
goes low or when
the output is not within +10% of its
nominal value
19
20
V
DD
PROTECT
2