Voltage regulators
1
AN8014S
Step-down, step-up, or inverting DC-DC converter control IC
n Overview
The AN8014S is a single-channel PWM DC-DC
converter control IC.
This IC can provide any one output type from
among step-down, step-up and inverting output.
Allowing n-channel power MOSFET direct driv-
ing, the AN8014S is ideal for high-efficiency power
supplies.
n Features
• Wide operating supply voltage range (3.6 V to 34 V)
(The voltage is limited within a range between 3.6
V and 17 V if it is connected to a step-down volt-
age circuit.)
• Totem pole output circuit: output peak current (– 1 A)
• On-chip pulse-by-pulse overcurrent detection and
protection circuit
Threshold voltage V
CC
- 0.095 V typical
• On-chip bootstrap circuit (allowing n-channel MOSFET direct driving.)
• On-chip under-voltage lock-out circuit (U.V.L.O.)
• On-chip on/off function (active-high control input, standby current of maximum 5 m A)
• On-chip timer latch short-circuit protection circuit
• Maximum oscillator frequency (500 kHz)
n Applications
• DC-DC switching power supply
n Block Diagram
SOP016-P-0225A
Unit: mm
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
Error amp.
V
REF
2.5V
R
S
Q
Q
R
S
Q
Out
CLM
10
15
14
13
6
7
IN+
IN-
OFF
16
5
S.C.P.
S.C.P.
comp.
V
CC
CB
RT
CTDTC
1 4 3 2
V
REF
PGND
FB
SGND
11 12 8
PWM
comp.
U.V.L.O.
Latch
Latch
Boot
strap
RQS
1 m A 10 m A
On/off
active-high
Constant
current
source
Triangular
wave OSC