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參數(shù)資料
| 型號： | TK65700L |
| 廠商： | TOKO INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, PDSO8 |
| 封裝： | SOT-23, 8 PIN |
| 文件頁數(shù)： | 1/1頁 |
| 文件大小： | 156K |
| 代理商： | TK65700L |
MEETING YOUR NEEDS
Product Information
Note that the contents are subject to change or discontinuation without notice. When placing orders, please confirm specifications and delivery condition in writing.
TOKO, INC. Jan.2003
Rev.2
UNDER
DEVELOPMENT
Charge Pump White LED Driver IC
TK65700L
DESCRIPTION
The TK65700L is a charge pump white LED driver IC. This
device has been optimized for battery controlled systems
where power consumption and size, high efficiency are
primary concerns. With a switching frequency of 1.2MHz,
the operation of the IC should not disturb 455kHz IF
subsystems.
FEATURES
V
OUT=5V Available supplied with Lithium Ion Battery
Few External Components
PWM Intensity Control
Inductor-less
Charge Pump Frequency: 1.2MHz Operation
External Small Capacitor Available
Low Ripple
Very Small Package SOT23L-8
APPLICATIONS
LCD Modules
Cellular Phones
Battery Powered Systems
Consumer Electronics
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Value
(TYP)
Unit
Operating Voltage Range
V
OP
2.7~5.0
V
Operating Temp. Range
T
OP
-30~+80
°C
Quiescent Current
I
Q
2.5
mA
Standby Current
I
STB
0.5
A
Charge Pump V
OUT
V
OUT
5V
Charge Pump I
OUT
I
OUT
45~
mA
On
V
EN(on)
1.8~(V
IN+0.1)
V
Control Voltage
Off
V
EN(off)
0~0.8
V
LED Pin Voltage
VLED
~0.2
V
Intensity Adjustment Freq.
F
EN
~2
kHz
Efficiency
EFF
75
%
Short Circuit Current
I
SHORT
100
mA
PACKAGE OUTLINE
SOT23L-8
Unit : mm
0.3
8
5
4
1
0.8
+0.10
0.05
M
0.1
3.3
0.4
2.2
(0.3)
1.2
0.15
0~0.1
0.1
1.4max
±0.2
±0.1
+0.10
0.05
±0.3
±0.2
15°max
3.4 ±0.2
BLOCK DIAGRAM
1
2
3
4
8
7
6
5
V
DD
INT
SWITCH
0.22
F
CAP+
INT
CAP-
DOUBLER
WITH
REGULATION
OSCILLATOR
ENABLE
V
ref
ENABLE
GND
V
OUT
1
F
LED
1
F
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