LM3687 Datasheet, PDF (3/35 Pages) National Semiconductor (TI) – Step-Down DC-DC Converter with Integrated Low Dropout Regulator and Startup Mode

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EN_DCDC
B2
LM3687
EN_LIN
C3
A2
SGND
LM3687
SNVS473A – DECEMBER 2007 – REVISED JULY 2008
V_BATT
C1
FB_DCDC
C2
SW
B1
2.2 PH
4.7 PF
PGND
A1
10 PF
2.7...5.5V
Load
DC-DC
0..750 mA
Li-Ion
or
3 cell
NiMH/
NiCd
V_{IN_LIN}
B3
V_{OUT_LIN}
A3
1.0 PF
2.2 PF
Load
LIN
0..350 mA
Figure 2. Typical Application Circuit: Independent Mode of Operation
Connection Diagram
Connection Diagram 9-Bump Thin Micro SMD Package
SGND
PGND
A1 A2
A3
V_{OUT_LIN}
SW
V_BATT
B1
B2
B3
EN_DCDC
C1
C2
C3
V_{IN_LIN}
EN_LIN
FB_DCDC
Figure 3. Top View
XT
BC
Figure 4. Package Mark
Copyright © 2007–2008, Texas Instruments Incorporated
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