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L5200 Schematic ( PDF Datasheet ) - Unisonic Technologies

Teilenummer L5200
Beschreibung REGULATED CHARGE PUMP DC/DC CONVERTERS
Hersteller Unisonic Technologies
Logo Unisonic Technologies Logo 




Gesamt 7 Seiten
L5200 Datasheet, Funktion
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






L5200 Datasheet, Funktion
L5200
TYPICAL CHARACTERISTICS (L5200-5.0V)
Output Voltage vs Supply Voltage
5.15
5.10
CIN = COUT = CFLY = 1
IOUT = 20mA
F
5.05
Ta = 85
5.00
Ta = 25
Ta = -40
4.95
4.90
4.85
2.7
3.0 3.3 3.6 3.9 4.2
Supply Voltage (V)
4.5
CMOS IC
Output Voltage vs Load Current
5.2
CIN = COUT = CFLY = 1 F
Ta = 25
5.1
5.0
VIN = 2.7V
4.9
VIN = 3V
VIN = 3.2V
4.8
0
50 100 150
Load Current (mA)
200
No Load Supply Current vs Supply Voltage
6
CIN = COUT = CFLY = 1 F
VSHDN = VIN
5 Ta = 25
Ta = 85
4
Ta = -40
3
2.7 3.0 3.3 3.6 3.9 4.2 4.5
Supply Voltage (V)
VSHDN Threshold Voltage vs Supply Voltage
1.1
1.0
0.9 Ta = -40
Ta = 25
0.8
0.7 Ta = 85
0.6
www.DataSheet4U0.c.5om
2.7 3.0 3.3 3.6 3.9 4.2 4.5
Supply Voltage (V)
Oscillator Frequency vs Supply Voltage
3.0
2.8
2.6
2.4 Ta = 25
2.2 Ta = -40
2.0 Ta = 85
1.8
1.6
1.4
1.2
1.0
2.7 3.0 3.3 3.6 3.9 4.2 4.5
Supply Voltage (V)
Efficiency vs Load Current
100
CIN = COUT = CFLY = 1 F
90 Ta = 25
VIN = 2.7V
80 VIN = 3.2V
70 VIN = 3.7V
60
VIN = 4.5V
50
40
30
1 10 100
Load Current (mA)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 7
QW-R502-029,D

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