參數(shù)資料
型號(hào): TPS61040DBV
廠商: Texas Instruments, Inc.
英文描述: LOW POWER DC/DC BOOST CONVERTER IN SOT-23 PACKAGE
中文描述: 低功率DC / DC升壓轉(zhuǎn)換器SOT - 23封裝
文件頁(yè)數(shù): 16/18頁(yè)
文件大小: 299K
代理商: TPS61040DBV
www.ti.com
V
IN
SW
FB
EN
GND
L1
10
μ
H
D1
C2
1
μ
F
C1
4.7
μ
F
R
S
82
V
CC
= 2.7 V to 6 V
PWM
100 Hz to 500 Hz
D2
24 V
(Optional)
L1:
D1:
C1:
C2:
Murata LQH4C100K04
Motorola MBR0530
Tayo Yuden JMK212BY475MG
Tayo Yuden TMK316BJ105KL
V
IN
SW
FB
EN
GND
L1
10
μ
H
D1
MBRM120L
C2
100 nF
C1
4.7
μ
F
R
S
110
V
CC
= 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:
D1:
C1:
C2:
Murata LQH4C3R3M04
Motorola MBR0530
Tayo Yuden JMK212BY475MG
Standard Ceramic Capacitor
TPS61040
TPS61041
SLVS413B–OCTOBER 2002–REVISED MAY 2004
Figure 22. White LED Supply With Adjustable Brightness Control
Using a PWM Signal on the Enable Pin Efficiency Aprox. Equals 86% at Vin = 3 V, I
LED
= 15 mA
A.
A smaller output capacitor value for C2 will cause a larger LED ripple
Figure 23. White LED Supply With Adjustable Brightness Control
Using an Analog Signal on the Feedback Pin
16
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