ADP1610ARMZ-R7 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADP1610ARMZ-R7

1.2 MHz DC-to-DC Step-Up Switching Converter

Analog Devices 

ADP1610

SEPIC POWER SUPPLY

The circuit in Figure 30 shows the ADP1610 in a single-ended

primary inductance converter (SEPIC) topology. This topology

is useful for an unregulated input voltage, such as a battery-

powered application in which the input voltage can vary between

2.7 V to 5 V, and the regulated output voltage falls within the input

voltage range.

The input and the output are dc-isolated by a coupling capacitor

(C1). In steady state, the average voltage of C1 is the input voltage.

When the ADP1610 switch turns on and the diode turns off, the

input voltage provides energy to L1, and C1 provides energy to

L2. When the ADP1610 switch turns off and the diode turns on,

the energy in L1 and L2 is released to charge the output capacitor

(COUT) and the coupling capacitor (C1) and to supply current to

the load.

2.5V–5.5V

CIN

10µF

4.7µH

L1

ADP1610

6 IN

SW 5

ON

3 SD

CSS

22nF

7 RT

8 SS

FB 2

COMP 1

GND

4

C1

10µF

4.7µH

L2

RCOMP

60kΩ

CCOMP

1nF

R1

16.8kΩ

R2

10kΩ

Figure 30. 3.3 V DC-to-DC Converter

3.3V

COUT

10µF

Rev. A | Page 16 of 20

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