ML4903CT Ver la hoja de datos (PDF) - Micro Linear Corporation
Número de pieza
componentes Descripción
Lista de partido
ML4903CT Datasheet PDF : 12 Pages
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ML4903
PIN CONFIGURATION
D0
D1
D2
D3
RANGE
SHDN
NC
PWR GOOD
VREF
GND
ML4903
20-Pin TSSOP (T20)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
TOP VIEW
PROTECT
VDD
VCC
P DRV
N DRV
PWR GND
NC
COMP
ISENSE
VFB
PIN DESCRIPTION
PIN NAME
FUNCTION
1 D0
LSB input to the DAC which sets the
output voltage
2 D1
Input to the DAC which sets the
output voltage
3 D2
Input to the DAC which sets the
output voltage
4 D3
MSB input to the DAC which sets the
output voltage
5 RANGE
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.
6 SHDN
Grounding this pin shuts down the
regulator
8 PWR GOOD This open drain output goes low
whenever SHDN goes low or when
the output is not within +10% of its
nominal value
PIN NAME
FUNCTION
9 VREF
Bypass connection for the internal
3.5V reference
10 GND
Analog signal ground
11 VFB
12 ISENSE
13 COMP
Output voltage feedback pin
Current sense input
Connection for the compensation and
optional soft-start delay network
15 PWR GND Power ground
16 N DRV
Synchronous rectifier driver output
17 P DRV
Buck switch driver output
18 VCC
Connection point for monitoring the
5V supply to determine the proper
condition of PWR GOOD
19 VDD
12V power supply input
20 PROTECT Connection for the integrating current
limit network
2
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