AN8015SH Datasheet, PDF (1/14 Pages) Panasonic Semiconductor – Single-channel step-down, step-up, or inverting use DC-DC converter control IC

Voltage Regulators
AN8015SH
Single-channel step-down, step-up, or inverting use
DC-DC converter control IC
s Overview
The AN8015SH is a single-channel DC-DC converter
control IC using the PWM method.
1
10
This IC can provide any one output type from among
step-down, step-up and inverting output.
5
6
Its operating supply voltage range is wide and its
consumption current is small. In addition, since it uses the
10-pin surface mounting type package with 0.5 mm pitch,
it is suitable for highly efficient miniature potable power
supply, especially for a negative output power supply.
s Features
• Wide operating supply voltage range (3.6 V to 34 V)
• Small consumption current (1.8 mA typical)
• Converter control in a wide output frequency range is
0.5±0.2
4.3±0.30
6.3±0.30
SSOP010-P-0225
possible (2 kHz to 500 kHz).
• Built-in timer latch short-circuit protection circuit (charge current 1.1 µA typical)
• Incorporating the under-voltage lock-out (U.V.L.O.) circuit
• Incorporating a high precision reference voltage circuit (2.46 V (allowance: ± 3%))
• Output block is open-collector (darlington) type.
• High absolute maximum rating of output current (100 mA)
• Maximum duty ratio is fixed and has small sample-to-sample variations (90% ± 5%).
• Using 10-pin small outline package of 0.5 mm pitch
Unit: mm
s Applications
• LCD displays, digital still cameras, and PDAs
s Block Diagram
Reference
supply _{2.46 V}
(allowance : ± 3%)
0.5 V
Triangular
wave OSC
1.2 V
0.37 V
PWM
comparator
5 _Out
IN+ ^{8 Error amp.} S.C.P. comp.
IN− ⁹
FB ¹⁰
1.83 V
Clamp
I _VREF
1.11 V
SR R O
Latch U.V.L.O.
4 _GND
1