APSemi APS1016ES5, APS1016ES5-1.2, APS1016ES5-1.5, APS1016ES5-1.8 Schematic [ru]

APSemi APS1016

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1.5 MHz, 600mA Synchronous Step-Down
Converter with Low Quiescent Current

GENERAL DESCRIPTION

The APS1016 is a 1.5 MHz constant frequency,
high efficiency, slope compensated current mode
PWM step-down converter. The device
integrates a main switch and a synchronous
rectifier for high efficiency without an external
Schottky diode. The APS1016 can operate from
a 2.5V to 5.5V input voltage and is ideal for
powering portable equipment that runs from a
single cell lithium-Ion (Li+) battery. It can
supply 600mA output current and can also run at
100% duty cycle for low dropout operation,
extending battery life in portable system.

The APS1016 features a Power Saving Mode
which reduces quiescent current to just 30µA
and significantly improves efficiency at light load.

The APS1016 is offered in a low profile (1mm)
5-pin, SOT package, and is available in an
adjustable version and fixed output voltage of

1.2V, 1.5V and 1.8V.

APPLICATIONS

• Cellular and Smart Phones

• PDAs

• MP3 Player

• DSP Core Supplies

• Digital Still Cameras

• Portable instruments

Typical Application

Figure 1. Basic Application Circuit with

APS1016 adjustable version

FEATURES

• High Efficiency: Up to 96%

• 1.5MHz Constant Switching Frequency

• 600mA Output Current at V

• Integrated Main switch and synchronous

rectifier.

• No Schottky Diode Required

• 2.5V to 5.5V Input Voltage Range

• Output Voltage as Low as 0.6V

• 100% Duty Cycle in Dropout

• Low Quiescent Current: 30µA

• <1uA Shutdown Current

• Slope Compensated Current Mode Control

for Excellent Line and Load Transient
Response

• Short Circuit and Thermal Fault Protection

• Space Saving 5-Pin Thin SOT23 package

=3.0V

IN

Order Information

Part Number

APS1016ES5 C1XY*

APS1016ES5-1.5 C2XY

APS1016ES5-1.8 C3XY

APS1016ES5-1.2 C4XY

*Note XY = Manufacturing Date Code

100

95

90

85

80

75

70

65

EFFICIENY (%)

60

55

50

45

40

0.1 1 10 100 1000

Mark

Efficiency vs Load Current

Vin = 2.7V

LOAD CURRENT (mA

Top

Vin = 3.6V

Temp Range

-40°C to +85°C

Vin = 4.2V

TA = 25C
Vout = 1.8V

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