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LM3370 Datasheet(PDF) 4 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) 4 Page - Texas Instruments

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B4
B3
PGND1_S
C4
C3
C2
D4
D2
SW1
A1
B1
C1
D1
E4
E3
E2
E1
B2
A2
A3
A4
VIN1
SGND
FB1
PGND1
SDA
SCL
VDD
SGND
NPOR1
NPOR2
PGND2
PGND2_S
EN2
EN1
SW2
VIN2
SGND
FB2
A
B
C
D
E
1
2
3
4
D3
B4
B3
PGND1_S
C4
C3
C2
D4
D2
SW1
A1
B1
C1
D1
E4
E3
E2
E1
B2
A2
A3
A4
VIN1
SGND
FB1
PGND1
SDA
SCL
VDD
SGND
NPOR1
NPOR2
PGND2
PGND2_S
EN2
EN1
SW2
VIN2
SGND
FB2
A
B
C
D
E
1
2
3
4
D3
Bottom View
Top View
LM3370
SNVS406N – NOVEMBER 2005 – REVISED MAY 2013
www.ti.com
Figure 2. DSBGA Connection Diagram
(See Package Number YZR0020DWA)
PIN DESCRIPTIONS (DSBGA)
Pin #
Name
Description
A1
SW1
Buck 1 Switch Pin
A2
VIN1
Power supply voltage input to PFET and NFET switches for Buck 1
A3
SGND
Signal GND
A4
FB1
Analog Feedback Input for Buck 1
B1
PGND1
Buck 1 Power Ground
B2
PGND1_S
Buck 1 Power Ground Sense
B3
SDA
I2C-Compatible Data, a 2 k
Ω pullup resistor is required
B4
SCL
I2C-Compatible Clock, a 2 k
Ω pullup resistor is required
C1
VDD
Signal supply voltage input, VDD must be equal or greater of the two inputs ( VIN1 and VIN2)
C2
SGND
Signal GND
Power ON Reset for Buck 1, Open drain output Low when Buck 1 output is 92% of target output.
C3
nPOR1
A 100 k
Ω pullup resistor is required
Power ON Reset for Buck 2, Open drain output Low when Buck 2 output is 92% of target output.
C4
nPOR2
A 100 k
Ω pullup resistor is required
D1
PGND2
Buck 2 Power Ground
D2
PGND2_S
Buck 2 Power Ground Sense
D3
EN2
Buck 2 Enable
D4
EN1
Buck 1 Enable
E1
SW2
Buck 2 Switch Pin
E2
VIN2
Power supply voltage input to PFET and NFET switches for Buck 2
E3
SGND
Signal GND
E4
FB2
Analog feedback for Buck 2
4
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Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: LM3370



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