AATIAN22 datasheet(9/11 Pages) SIGE

Part #	AATIAN22

Description	3MHz Fast Transient 400mA Step-Down Converter

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	SIGE [SiGe Semiconductor, Inc.]

Direct Link	http://www.sige.com

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9 / 11 page

Test: R

DS(ON)H and RDS(ON)L

Configure the specified test equipment as shown in Figure 8.

Enable UUT by connecting the jumper to the ‘ON’ position, and connect the FB pin to GND to turn-on the

high side PMOS and turn-off the low side NMOS.

Connect 4 wires (Force and Sense) from the Keithley power supply between V

IN and LX node.

Set the

compliance to V

SRC = 40mV at ICOMP = 300mA.

Power up and measure

To measure the R

DS(ON)L, repeat steps 2 through 4 with the FB pin connected to VCC (to turn on the low

side NMOS) and connect the 4 wires (Force and Sense) between LX and GND.

Figure 8: AAT1149 Schematic Connection Diagram for R

DS(ON).

DS(ON)L =

SRC

COMP

DS(ON)H =

SRC

COMP

EV-139

AAT1149 EVAL: 3MHz Fast Transient

400mA Step-Down Converter

EV-139.2007.08.1.0

AATIAN22 Datasheet(PDF) 9 Page - SiGe Semiconductor, Inc.