Texas Instruments 1.5A High Efficiency Synchronous Switching Regulator LM2651EVAL LM2651EVAL Datenbogen
Produktcode
LM2651EVAL
Operating the Evaluation Board
Figure 1. LM2651_EVAL Schematic for Adjustable Voltage
Table 1. Bill of Materials
Ref Designator
Part Description
Part Number
U1
IC LM2651MTC-ADJ
LM2651MTC-ADJ
L1
Inductor
Coilcraft DO3316P-223
CIN
Tan Cap 100 µF 16V 10% Size = D
Vishay 594D107X0016D2T
CSS
Cer Cap 4.7 nF 50V X7R 10% 1206
Vishay VJ1206Y472KXAMB
CC2
Cer Cap 100 pF 50V NPO 1206
Vishay VJ1206A101JXAMB
CC1
Cer Cap 2.2 nF 50V X7R 10% 1206
Vishay VJ1206Y222KXAMB
COUT
Tan Cap 120 µF 6.3V 10% Size = D
Vishay 594D127X06R3C2T
CIN2
Cer Cap 0.1 µF 50V X7R 10% 0805
Vishay VJ0805Y104KXAMB
CB
Cer Cap 0.1 µF 50V X7R 10% 0805
Vishay VJ0805Y104KXAMB
R1
Res 20.0 k
Ω ⅛
W 1% 0805
Vishay CRCW08052002F
R2
Res 19.6 k
Ω ⅛
W 1% 0805
Vishay CRCW08051962F
RC
Res 30.0 k
Ω ⅛
W 5% 0805
Vishay CRCW0805303J
D1
Schottky Diode 1A SMA
Motorola MBRA130LT3
3
Operating the Evaluation Board
3.1
Setup
The LM2651_EVAL evaluation board comes ready to be tested. The only setup needed is connecting the
input voltage to the V
input voltage to the V
IN
and GND posts. The load and output are connected to the V
OUT
post.
3.2
Operating Conditions
The input voltage to the LM2651 regulator must be within the range of 4V to 14V DC for proper operation.
The device will not function properly with voltages below 4V and damage may occur if any voltage greater
than 16V is applied. Refer to LM2651 1.5A High Efficiency Synchronous Switching Regulator (
The device will not function properly with voltages below 4V and damage may occur if any voltage greater
than 16V is applied. Refer to LM2651 1.5A High Efficiency Synchronous Switching Regulator (
)
for all performance characteristics.
2
AN-1147 LM2651_EVAL 1.5A High Efficiency Synchronous Switching
SNVA019A – October 2007 – Revised April 2013
Regulator Evaluation Board
Copyright © 2007–2013, Texas Instruments Incorporated