ADP2164ACPZ-3.3-R7(Rev0) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADP2164ACPZ-3.3-R7
(Rev.:Rev0)

6.5 V, 4 A, High Efficiency, Step-Down DC-to-DC Regulator

Analog Devices 

Data Sheet

FEATURES

4 A continuous output current

43 mΩ and 29 mΩ integrated FET

±1.5% output accuracy

Input voltage range: 2.7 V to 6.5 V

Output voltage: 0.6 V to VIN

Switching frequency

Fixed frequency: 600 kHz or 1.2 MHz

Adjustable frequency: 500 kHz to 1.4 MHz

Synchronizable from 500 kHz to 1.4 MHz

Selectable synchronize phase shift: 0° or 180°

Current mode architecture

Precision enable input

Power-good output

Voltage tracking input

Integrated soft start

Internal compensation

Starts up into a precharged output

UVLO, OVP, OCP, and thermal shutdown

Available in 16-lead, 4 mm × 4 mm LFCSP package

APPLICATIONS

Point-of-load conversion

Communications and networking equipment

Industrial and instrumentation

Consumer electronics

GENERAL DESCRIPTION

The ADP2164 is a 4 A, synchronous, step-down dc-to-dc regulator

in a compact 4 mm × 4 mm LFCSP package. The regulator uses a

current mode, constant frequency pulse-width modulation (PWM)

control scheme for excellent stability and transient response.

The input voltage range of the ADP2164 is 2.7 V to 6.5 V. The

output voltage of the ADP2164 is adjustable from 0.6 V to the

input voltage (VIN). The ADP2164 is also available in six preset

output voltage options: 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V.

6.5 V, 4 A, High Efficiency,

Step-Down DC-to-DC Regulator

ADP2164

TYPICAL APPLICATIONS CIRCUIT

R1

R2

C1

VIN

CIN

PGOOD VIN

EN

PVIN

L

SW

SYNC ADP2164 FB

TRK

PGND

RT

RT

GND

VOUT

COUT

Figure 1.

100

95

90

85

80

75

70

65

60

55

50

0

VIN = 5V

fS = 600kHz

VOUT = 1.2V

VOUT = 3.3V

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

OUTPUT CURRENT (A)

Figure 2. Efficiency vs. Output Current

The ADP2164 integrates a pair of low on-resistance P-channel

and N-channel internal MOSFETs to maximize efficiency and

minimize external component count. The 100% duty cycle

operation allows low dropout voltage at 4 A output current.

The high, 1.2 MHz PWM switching frequency allows the use of

small external components, and the SYNC input enables multiple

ICs to synchronize out of phase to reduce ripple and eliminate

beat frequencies.

Other key features of the ADP2164 include undervoltage lockout

(UVLO), integrated soft start to limit inrush current at startup,

overvoltage protection (OVP), overcurrent protection (OCP),

and thermal shutdown.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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Tel: 781.329.4700

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Fax: 781.461.3113

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