ADP2164 6.5V, 4 A, High Efficiency, Step-Down, DC-to-DC Regulator

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.

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.

Applicaitons

Point of load conversion
Communications and networking equipment
Industrial and instrumentation
Consumer electronics

Features and Benefits

4 A continuous output current
43 mΩ and 29 mΩ integrated FET
±1.5% output accuracy
Input voltage range from 2.7 V to 6.5 V
Output voltage from 0.6 V to VIN
Switching frequency
- Fixed frequency:
600 kHz or 1.2 MHz
- Adjustable frequency:
500 kHz to 1.4 MHz

Synchronizable between 500 kHz and 1.4 MHz
Selectable synchronize phase shift: 0° or 180°
Current mode architecture
Precision enable input
Power good output
See data sheet for additional features

Power Management

Switching Regulators

Design Tools

ADP21xx Buck Regulator Design Tool .

Data Sheets

Document	note
ADP2164: 6.5 V, 4 A, High Efficiency, Step-Down DC-to-DC Regulator Data Sheet (Rev. A)	PDF 997 kB

User Guides

Document	note
UG-329: Evaluation Board for the ADP2164 Step-Down Regulator	PDF 440 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 1000+	RoHS
ADP2164ACPZ-1.0-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-1.2-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-1.5-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-1.8-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-2.5-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-3.3-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y
ADP2164ACPZ-R7 Production	16 ld LFCSP (4x4mm, 2.5mm exposed pad)	REEL 1500	-40 to 125C	1.66	Y

Evaluation Boards

Part Number	Description	Price	RoHS
AD-FMCADC4-EBZ	4-Channel, 14-bit, 1GSPS Data Receiver Board	1699	Y
AD-FMCOMMS2-EBZ	RF Performance Evaluation Board	750	Y
AD-FMCOMMS3-EBZ	Wideband Prototyping Board	750	Y
AD-FMCOMMS4-EBZ	1 x 1 Transceiver wideband prototyping and RF performance Board	399	Y
ADP2164-EVALZ	Evaluation Board	60	Y
ADZS-SC589-EZBRD	Evaluation Board	435	Y
ADZS-SC589-EZLITE	EZ-BRD with ICE-1000 and 2x 180 Day CCES License	495	Y