APE1920MP datasheet(1/16 Pages) A-POWER

No. de pieza	APE1920MP

Descripción Electrónicos	680K/1.2MHz, HIGH VOLTAGE, BOOST CONVERTER

PDF	16 Pages

Scroll/Zoom	100%

Fabricante Electrónico	A-POWER [Advanced Power Electronics Corp.]

Página de inicio	http://www.a-power.com.tw

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1 / 16 page

Advanced Power

Electronics Corp.

680K/1.2MHz, HIGH VOLTAGE, BOOST CONVERTER

FEATURES

DESCRIPTION

Operating Voltage from 2.6V to 5.5V

Adjustable Output Voltage Range

up to 27V

Up to 3A Output Switch Current

680K/1.2MHz Selectable Switching

Frequency

Programmable Soft-start Function

External Compensation Network

Current Limit and Thermal Shutdown

Protection

Under Voltage Lockout

< 1µA Shutdown Current

Available in the Pb-Free MESOP-10,

MESOP-8, TDFN 3x3-10L and ESOP-8

Packages

1.FREQ=High (Frequency=1.2MHz) (MESOP-10 and TDFN 3x3-10L)

Data and specifications subject to change without notice

201203271

APE1920

TYPICAL APPLICATION

1

The APE1920 is a high performance, high efficiency

step up DC-DC Converter with integrated 3A. The APE1920

converter input voltage ranging from 2.6 to 5.5V. The Output

voltage can be set up to 27V. The selectable frequency of

680 kHz and 1.2 MHz allows the use of small external

inductors

and

capacitors

and

provides

fast

transient

response. Current mode control with external compensation

network makes it easy to stabilize the system and keep

maximum

flexibility.

Programmable

soft

start

function

minimizes impact on the input power system. Internal power

MOSFET with very low RDS (ON) provides high efficiency.

The APE1920 automatically transits from PWM to PFM

during light load condition further increasing efficiency. The

converter also provides protection functions such as Current

Limit and Thermal shutdown. The APE1920 is available in

space-saving MESOP-10, MESOP-8, TDFN 3x3-10L and

ESOP-8 packages.

R8

15K

VIN=5V

C2

2*10uF

L1

4.7uH

R2

130K

VOUT=12V

C7

100pF

U1

APE1920

VCC

EN

COMP

FB

SS

SGND

PGND

FREQ

LX

C3

0.1uF

C3

3*10uF

R6

100K

C6

10nF

D1

B340A

LX

4.7~100

R3

R4

1M

C5

1nF

R8

R2

VOUT = 1.238V X (1 + ------- )

R8 Suggest 10K~30K

VIN < 4.5V, R3=10Ω

VIN > 4.5V, R3= 100Ω

C1

220pF

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