Voltage Regulators
1
AN8011S
2-channel step-down, step-up, or inverting use
DC-DC converter control IC
n Overview
The AN8011S is a DC-DC converter control IC
with two-channel output using the PWM method
which allows 500 kHz high-speed control.
Respecitve output operation can be completely
synchronized with each other by using the same
oscillation output.
n Features
• PWM control frequency of 500 kHz is available.
• Wide operating supply voltage range
(V
CC
= 3.6 V to 34 V)
• Built-in 2-channel of open collector type for out-
put (A single-channel is also usable for inverted
amplification type)
• Each output can be stopped independently by the
external control .
• Built-in on/off function for the operation/stop of IC Incorporating circuit for short-circuit portection and under-
voltage lock-out (U.V.L.O.)
• The latch circuit is externally controllable.
• Low consumption current (during operation: 5 mA, during standby: 2 µA)
n Applications
• LCD displays, digital still cameras, and PDAs
n Block Diagram
Unit: mm
SOP016-P-0225A
0.3
(0 to 10 )
(0.15)
10.1±0.3
4.2±0.3 6.5±0.3
18
16 9
1.27
(0.605)
Seating plane Seating plane
0.40±0.25
0.1±0.1
1.5±0.2
V
REF
V
CC
Out1DTC1FB1IN
-
1
IN
+
Latch
U.V.L.O.
OSC
Latch
On/
Off
Unlatch pro.
Unlatch pro.
Short pro.
Error amp.
Error amp.
PWM1
PWM2
16 15 14 13 12 11 10
9
V
REF
1
CT
2 3
RT
On/Off
4
IN
-
2
FB2
5 6
DTC2
7
Out2
8
GND