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LM3370 Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3370
Description  Dual Synchronous Step-Down DC-DC Converter
PDF  33 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3370 Datasheet(HTML) 3 Page - Texas Instruments

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1
2
3
4
13
14
15
16
VIN2
SW2
PGND2
VDD
FB2
EN2
EN1
nPOR2
5
12
SGND
nPOR1
6
7
8
10
11
9
PGND1
SW1
VIN1
FB1
SDA
SCL
LM3370
www.ti.com
SNVS406N – NOVEMBER 2005 – REVISED MAY 2013
Figure 1. WSON Connection Diagram
(See Package Number NHR0016B)
PIN DESCRIPTIONS (WSON)
Pin #
Name
Description
1
VIN2
Power supply voltage input to PFET and NFET switches for Buck 2
2
SW2
Buck 2 Switch Pin
3
PGND2
Buck 2 Power Ground
4
VDD
Signal supply voltage input, VDD must be equal or greater of the two inputs (VIN1 and VIN2)
5
SGND
Signal GND
6
PGND1
Buck 1 Power Ground
7
SW1
Buck 1 Switch Pin
8
VIN1
Power supply voltage input to PFET and NFET switches for Buck 1
9
FB1
Analog Feedback Input for Buck 1
10
SDA
I2C-Compatible Data, a 2 k
Ω pull up resistor is required
11
SCL
I2C-Compatible Clock, a 2 k
Ω pull up resistor is required
Power ON Reset for Buck 1, Open drain output Low when Buck 1 output is 92% of target
12
nPOR1
output. A 100 k
Ω pull up resistor is required
Power ON Reset for Buck 2, Open drain output Low when Buck 2 output is 92% of target
13
nPOR2
output. A 100 k
Ω pull up resistor is required
14
EN1
Buck 1 Enable
15
EN2
Buck 2 Enable
16
FB2
Analog feedback for Buck 2
Copyright © 2005–2013, Texas Instruments Incorporated
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3
Product Folder Links: LM3370



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