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参数资料
| 型号： | TPS61500PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 5 A SWITCHING REGULATOR, 2640 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | GREEN, PLASTIC, HTSSOP-14 |
| 文件页数： | 18/21页 |
| 文件大小： | 725K |
| 代理商： | TPS61500PWPR |
FUNCTIONAL BLOCK DIAGRAM
OVP
SW
Ramp
Generator
Oscillator
Current
Sensor
EN
PGND
+
EA
VIN
PWMControl
COMP
SS
FREQ
DIMC
FB
Gate
Dirver
AGND
1.229VRef.
200mVRef.
and
Dimming
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
SLVS893 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Circuit of Figure 1; L1 = D104C2-10
H; D1 = SS3P6L-E3/86A, R4 = 80k, C4 = 470nF, C2 = 10F, LED = OSRAM LCW
FIGURE
W5SM, ILED=400mA; unless otherwise noted
Efficiency
VIN = 5 V, 4 LEDs, 8 LEDs, 10 LEDs
3
Efficiency
VIN = 5 V, 12 V; Vout = 8 LEDs
4
FB voltage accuracy
vs Temperature
5
Switch current limit
vs Duty cycle
6
Switch current limit
vs Temperature
7
PWM dimming
VIN = 5 V, 4 LEDs
8
PWM dimming linearity
9
Analog dimming
C5 = 1
F, VIN = 5 V, 4 LEDs
10
Analog dimming linearity
11
PWM dimming start-up
C3 = 47 nF, C5 = Float, 200 Hz with 90% duty cycle
12
Analog dimming start-up
C3 = 47 nF, C5 = 1
F, 5k PWM with 90% duty cycle
13
6
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS61500
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