Voltage Regulators
1
AN8016NSH
Single-channel 1.8-volt step-up DC-DC converter control IC
n Overview
The AN8016NSH is a single-channel PWM DC-DC
converter control IC that supports low-voltage operation.
This IC allows a stepped-up voltage output to be pro-
vided with a minimal number of external components. It
features a low minimum operating voltage of 1.8 V, and
due to being provided in a 10-pin surface mount package
with a 0.5 mm lead pitch, is optimal for use in miniature
high-efficiency power supplies for portable equipment.
n Features
• Wide operating supply voltage range: 1.8 V to 14 V
• High-precision reference voltage circuit: 1.27 V (allow-
ance: – 3%)
• Supports control over a wide output frequency range:
20 kHz to 1 MHz
• Provides a fixed output current with minimal supply voltage fluctuations by using an external resistor to set the output
current with a totem pole structure in the output block.
• Large maximum output current of – 50 mA
• Timer latch short-circuit protection circuit (charge current: 1.3 m A typical)
• Low input voltage malfunction prevention circuit (U.V.L.O.) (circuit operation start voltage: 1.6 V typical)
• On/off control function (active-high, standby current: 5 m A maximum)
• Fixed maximum duty ratio with small sample-to-sample variations (80% – 5%)
• Adjustable soft start time provided by using separate DTC and S.C.P. pins.
• Adopts a 0.5 mm lead pitch 10 pin SO flat package (SSONF-10D)
• Adopts techniques for reducing noise, increasing the light load efficiency, and suppressing the maximum base current
when turning on the npn transistor used as the external switching element.
n Applications
• LCD displays, digital still cameras, PDAs
SSOP010-P-0225
Unit: mm
4.3– 0.30
6.3– 0.30
0.5– 0.2
0.1
–
0.1
1
5
10
6
0.2
–
0.1
0.5
3.0
–
0.30
1.5
–
0.2
0.625
–
0.10
0.625
–
0.10
0.15
+0.1
–0.05