参数资料
型号: TPS61040DBV
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 0.45 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO5
封装: GREEN, PLASTIC, SOT-23, 5 PIN
文件页数: 8/27页
文件大小: 779K
代理商: TPS61040DBV
VIN
SW
FB
EN
GND
L1
10
H
D1
C2
1
F
C1
4.7
F
RS
82
VCC = 2.7 V to 6 V
PWM
100 Hz to 500 Hz
D2
24 V
(Optional)
L1:
Murata LQH4C100K04
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2:
Tayo Yuden TMK316BJ105KL
VIN
SW
FB
EN
GND
L1
10
H
D1
MBRM120L
C2
100 nF
(See
Note A)
C1
4.7
F
RS
110
VCC = 2.7 V to 6 V
R1
120 k
R2
160 k
Analog Brightness Control
3.3 V
Led Off
0 V
Iled = 20 mA
D2
24 V
(Optional)
L1:
Murata LQH4C3R3M04
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2:
Standard Ceramic Capacitor
SLVS413F – OCTOBER 2002 – REVISED DECEMBER 2010
www.ti.com
Figure 22. White LED Supply With Adjustable Brightness Control
Using a PWM Signal on the Enable Pin, Efficiency Approx. Equals 86% at VIN = 3 V, ILED = 15 mA
A.
A smaller output capacitor value for C2 causes a larger LED ripple.
Figure 23. White LED Supply With Adjustable Brightness Control
Using an Analog Signal on the Feedback Pin
16
Copyright 2002–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS61040 TPS61041
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