Datasheet

  
   
SLVS167C − SEPTEMBER 1998 − REVISED − MAY 1999
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram
†
Switch positions shown with EN
low (active).
+
−
Delayed
Reset
V
ref
= 1.182 V
†† †
GND
EN
IN
OUT
RESET
SENSE/FB
R1
R2
OUTPUT VOLTAGE
R1 R2 UNIT
Adjustable 0
∞
Ω
1.8 V 122 233 kΩ
2.5 V 260 233 kΩ
3.3 V 420 233 kΩ
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME NO.
I/O
DESCRIPTION
NC 1, 2, 7, 8,
13−16, 20,
21, 26, 27
No connection
1GND 3 Regulator #1 ground
1EN 4 I Regulator #1 enable, low = enable
1IN 5, 6 I Regulator #1 input supply voltage
2GND 9 Regulator #2 ground
2EN 10 I Regulator #2 enable, low = enable
2IN 11, 12 I Regulator #2 input supply voltage
2OUT 17, 18 O Regulator #2 output voltage
2SENSE 19 I Regulator #2 output voltage sense (fixed output)
2RESET 22 O Regulator #2 reset signal, low = reset
1OUT 23, 24 O Regulator #1 output voltage
1FB/SENSE 25 I Regulator #1 output voltage feedback (adjustable output)
1RESET 28 O Regulator #1 reset signal, low = reset