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PDF L5200 Data sheet ( Hoja de datos )
| Número de pieza | L5200 | |
| Descripción | REGULATED CHARGE PUMP DC/DC CONVERTERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L5200 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
L5200
CMOS IC
LOW NOISE, REGULATED
CHARGE PUMP DC/DC
CONVERTERS
DESCRIPTION
The UTC L5200-xx series are low noise, constant frequency
charge pump DC/DC converters and designed to increase efficiency
in white LED application. The operating voltage range is 2.7V ~ VOUT
input with up to 100mA of output current. Low external parts counts
(one flying capacitor and two small bypass capacitors at VIN and
VOUT) make the UTC L5200-xx series ideally suited for small,
battery-powered applications.
A charge-pump architecture maintains constant switching
frequency to zero load and reduces both output and input ripple. The
UTC L5200-xx series have thermal shutdown capability to escape
the device damaged from a continuous short-circuit. With built-in
soft-start circuitry to prevents excessive current flow at VIN during
start-up. High switching frequency enables the use of small ceramic
capacitors. A low-current shutdown feature disconnects the load from
VIN and reduces quiescent current to <1µA.
The L5200-ADJ is available in MSOP-8 package and
L5200-fixed in SOT-26 and TSOT-26 package.
FEATURES
* Low Noise Constant Frequency Operation
* Output Current: 100mA
* 2MHz Switching Frequency
* 4.5V/5.0V Fixed Output Voltage
* VIN Range: 2.7V ~ VOUT
* Automatic Soft-Start.
* No Inductors
* Less than 1µA of Shutdown Current
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
L5200-AD-SM1-R
L5200L-AD-SM1-R
L5200-AD-SM1-T
L5200L-AD-SM1-T
L5200-xx-AG6-R
L5200L-xx-AG6-R
L5200-xx-AH6-R
L5200L-xx-AH6-R
Note: xx :output voltage
Package
MSOP-8
MSOP-8
SOT-26
TSOT-26
MSOP -8
65 4
1 2 3 SOT-26
65 4
123
TSOT-26
*Pb-free plating product number: L5200L
Packing
Tape Reel
Tube
Tape Reel
Tape Reel
L5200L-AD-SM1-R
www.DataSheet4U.com
(1)Packing Type
(2)Package Type
(3)Output Voltage
(4)Lead Plating
(1) R: Tape Reel, T: Tube
(2) SM1: MSOP-8, AG6: SOT-26, AH6: TSOT-26
(3) AD: ADJ, xx: 45:4.5V, 50:5.0V
(4) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 7
QW-R502-029,D
1 page  
L5200
TYPICAL APPLICATION CIRCUIT
Regulated 5V Output from a 2.7V ~ VOUT Input
1F
VIN
2 .7 V ~ VOUT
1
F
OFF ON
46
C_ C+
51
VIN V OUT
2
GND
1
F
3
SHDN
VOUT
IOUT
IOUT
UU=PP5~~V41+_00m20%mA,AV, VININ≥
2
≥
.7V
3 .1
V
UTC L5200-5.0V
CMOS IC
Output Ripple Voltage vs Load Current
40
V IN = 3V
CFLY = 1 F
Ta =25
30
COUT = 1 F
20
COUT = 2.2 F
10
0
0 25 50 75 100
OUTPUT CURRENT (mA )
White or Blue LED Driver with LED Current Control ( UTC L5200-ADJ)
1F
3V~ 4.4V
Li - Ion
BATTERY
13
C+
2
VIN
C-
8
V OUT
UP TO 6 LEDS
1F
1F
FB 7
SGND 5
ON OFF 6 SHDN PGND 4
82 82 82 82 82 82
( APPLY PWM WAVEFORM FOR
ADJUSTABLE BRIGHTNESS CONTROL )
VSHDN
t
USB Port to Regulated 5V Power Supply ( UTC L5200-5.0V)
1F
46
51
USB Port
1F
3 UTC
L5200-5.0V
2
VOUT
1 F 5V±2%
50mA
www.DataSheet4U.com
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R502-029,D
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet L5200.PDF ] | |
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