Mount  

Surface Mount

Mounting Type  

Surface Mount

Package / Case  

28-TSSOP (0.173, 4.40mm Width)

Number of Pins  

28

Voltage - Input (Nom)  

15V

Operating Temperature  

-40°C~125°C TJ

Packaging  

Tube

JESD-609 Code  

e0

Pbfree Code  

no

Part Status  

Obsolete

Moisture Sensitivity Level (MSL)  

3 (168 Hours)

Number of Terminations  

28

ECCN Code  

EAR99

Terminal Finish  

Tin/Lead (Sn/Pb)

Voltage - Supply  

4.5V~28V

Terminal Position  

DUAL

Terminal Form  

GULL WING

Peak Reflow Temperature (Cel)  

235

Terminal Pitch  

0.65mm

Frequency  

345kHz

Base Part Number  

LM2657

Function  

Step-Down

Number of Outputs  

2

Output Type  

Transistor Driver

Operating Supply Voltage  

28V

Analog IC - Other Type  

DUAL SWITCHING CONTROLLER

Output Configuration  

Positive

Current - Output  

20A

Quiescent Current  

2.5mA

Control Features  

Current Limit, Enable, Frequency Control, Power Good, Soft Start

Voltage - Output  

600mV

Topology  

Buck

Min Input Voltage  

4.5V

Control Mode  

VOLTAGE-MODE

Frequency - Switching  

200kHz~500kHz

Max Input Voltage  

28V

Control Technique  

PULSE WIDTH MODULATION

Synchronous Rectifier  

Yes

Min Output Voltage  

600mV

Switcher Configuration  

PUSH-PULL

Max Duty Cycle  

70 %

Clock Sync  

No

Height  

900μm

Length  

9.7mm

Width  

4.4mm

RoHS Status  

Non-RoHS Compliant

Lead Free  

Contains Lead