Datasheet

nPOR2
nPOR1
AND
AND
OR2
PGND
SW
V
IN1
Buck1
FB1
EN_I2C
EN1
V
IN1
SW1
PGND1
PGND
SW2
V
IN2
Buck2
POR2
FB2
EN2
V
IN2
SW2
PGND2
SGND
V
DD
buck2 control
buck1 control
FB1
SDA
SCL
I
2
C
Registers
EPROM
EN2
FB2
SCL
SDA
EN1
POR1
EN_bk2
EN_bk1
U1
U2
2
1
LM3370
SNVS406N –NOVEMBER 2005–REVISED MAY 2013 www.ti.com
DESCRIPTION (CONTINUED)
There is a power-on-reset function that monitors the level of the output voltage to avoid unexpected power
losses. The independent enable pin for each output allows for simple and effective power sequencing.
LM3370 is available in a 4mm by 5mm 16-lead non-pullback WSON and a 20-bump DSBGA, 3.0mm x 2.0mm x
0.6mm, package. A high switching frequency—2 MHz (typ)—allows use of tiny surface-mount components
including a 2.2µH inductor.
Default fixed voltages for the 2 output voltages combination can be customized to fit system requirements by
contacting Texas Instruments.
Functional Block Diagram
Typical Performance Curve
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Product Folder Links: LM3370