ADP2120ACPZ-1.2-R7 datasheet(1/24 Pages) AD

部件名	ADP2120ACPZ-1.2-R7

功能描述	2 A/1.25 A, 1.2 MHz, Synchronous, Step-Down DC-to-DC Regulators

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制造商	AD [Analog Devices]

网页	http://www.analog.com

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2 A/1.25 A, 1.2 MHz, Synchronous,

Step-Down DC-to-DC Regulators

ADP2119/ADP2120

Rev. 0

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

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

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

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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

FEATURES

Continuous output current

ADP2119: 2 A

ADP2120: 1.25 A

145 mΩ and 70 mΩ integrated MOSFETs

Input voltage range from 2.3 V to 5.5 V

Output voltage from 0.6 V to VIN

±1.5% output accuracy

1.2 MHz fixed switching frequency

Synchronizable between 1 MHz and 2 MHz

Selectable PWM or PFM mode operation

Current mode architecture

Precision threshold enable input

Power-good flag

Voltage tracking

Integrated soft start

Internal compensation

Startup with precharged output

UVLO, OVP, OCP, and thermal shutdown

10-lead, 3 mm × 3 mm LFCSP_WD package

APPLICATIONS

Point of load conversion

Communications and networking equipment

Industrial and instrumentation

Consumer electronics

Medical applications

TYPICAL APPLICATION CIRCUIT

10

EN

ADP2119/ADP2120

1

VIN

9

SYNC/MODE

2

PVIN

8

PGOOD

3

SW

7

TRK

4

PGND

6

FB

5

GND

R2

10k

Ω

VIN

5V

CIN

22µF

X5R

6.3V

COUT

22µF

X5R

6.3V

C1

0.1µF

R1

10

Ω

RBOT

2.21k

Ω

VOUT

3.3V

L

1.5µH

RTOP

10k

Ω

Figure 1.

GENERAL DESCRIPTION

The ADP2119/ADP2120 are low quiescent current, synchronous,

step-down dc-to-dc regulators in a compact 3 mm × 3 mm

LFCSP_WD package. Both devices use a current mode, constant

frequency pulse-width modulation (PWM) control scheme for

excellent stability and transient response. Under light load conditions,

they can be configured to operate in a pulse frequency modulation

(PFM) mode, which reduces switching frequency to save power.

The ADP2119/ADP2120 support input voltages from 2.3 V to

5.5 V. The output voltage can be adjusted from 0.6 V up to the

input voltage (VIN) for the adjustable version, whereas the fixed

output version is available in preset output voltage options of 3.3 V,

2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V. The ADP2119/ADP2120 require

minimal external parts and provide a high efficiency solution with

their integrated power switches, synchronous rectifiers, and internal

compensation. Each IC draws less than 2 μA current from the input

source when it is disabled. Other key features include undervoltage

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

startup, overvoltage protection (OVP), overcurrent protection

(OCP), and thermal shutdown (TSD).

100

90

80

70

60

50

40

30

20

10

0

0.01

0.1

1

OUTPUT CURRENT (A)

PFM

FPWM

VIN = 5V

VOUT = 1.8V

Figure 2. ADP2119 Efficiency vs. Output Current

类似零件编号 - ADP2120ACPZ-1.2-R7

制造商	部件名	数据表	功能描述
Analog Devices	ADP2121	1Mb / 20P	600 mA, 6 MHz, Synchronous Step-Down DC-to-DC Converter REV. B
	ADP2126	845Kb / 20P	Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters REV. A
	ADP2126	893Kb / 20P	Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters Rev. B
	ADP2126-1.2-EVALZ	845Kb / 20P	Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters REV. A
	ADP2126-1.2-EVALZ	893Kb / 20P	Ultralow Profile, 500 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converters Rev. B

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类似说明 - ADP2120ACPZ-1.2-R7

制造商	部件名	数据表	功能描述
Texas Instruments	TPS62040	372Kb / 21P	1.2 A/1.25 MHZ, HIGH EFFICIENCY STEP DOWN CONVERTER
Analog Devices	ADP2114	2Mb / 40P	Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator REV. 0
Analog Devices	ADP2118	1Mb / 24P	3 A, 1.2 MHz/600 kHz High Efficiency Synchronous Step-Down DC-to-DC Converter REV. 0
Texas Instruments	TPS62040	944Kb / 30P	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
Texas Instruments	TPS62040	1Mb / 30P	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
Panasonic Semiconductor	NN30320A	1Mb / 33P	3 A Synchronous DC-DC Step down Regulator
Texas Instruments	LM3281	1Mb / 26P	3.3-V, 1.2-A, 6-MHz Miniature Step-Down DC-DC Converter
	TPS62040	1Mb / 30P	1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
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ON Semiconductor	FAN8060	488Kb / 14P	1.2 MHz, 1 A Synchronous Step-Down DC/DC Regulator Rev. 1.0.1