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Unisonic Technologies
Unisonic Technologies

L5201 Datasheet Preview

L5201 Datasheet

REGULATED CHARGE PUMP DC/DC CONVERTERS

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L5201 pdf
UNISONIC TECHNOLOGIES CO., LTD
L5201
CMOS IC
LOW NOISE, REGULATED
CHARGE PUMP DC/DC
CONVERTERS
65 4
MSOP -8
DESCRIPTION
The UTC L5201-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 L5201-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 L5201-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 L5201-ADJ is available in MSOP-8 package and
L5201-fixed in SOT-26 and TSOT-26 package.
1 2 3 SOT-26
65 4
123
TSOT-26
*Pb-free plating product number: L5201L
FEATURES
* Low Noise Constant Frequency Operation
* Output Current:
90mA@3.0V<VIN<5V
100mA@3.0V<VIN<4.5V
* 1MHz 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
L5201-AD-SM1-R
L5201L-AD-SM1-R
L5201-AD-SM1-T
L5201L-AD-SM1-T
L5201-xx-AG6-R
L5201L-xx-AG6-R
L5201-xx-AH6-R
L5201L-xx-AH6-R
Note: xx :output voltage
www.DataSheLe5t240U1.Lco-AmD-SM1-R
(1)Packing Type
(2)Package Type
(3)Output Voltage
(4)Lead Plating
Package
MSOP-8
MSOP-8
SOT-26
TSOT-26
Packing
Tape Reel
Tube
Tape Reel
Tape Reel
(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-R502-107,A



Unisonic Technologies
Unisonic Technologies

L5201 Datasheet Preview

L5201 Datasheet

REGULATED CHARGE PUMP DC/DC CONVERTERS

No Preview Available !

L5201 pdf
L5201
MARKING (For SOT-26/TSOT-26)
6 54
Lead Plating
LF
Voltage Code
123
CMOS IC
PIN CONFIGURATIONS
MSOP-8
C+ 1
VIN 2
C- 3
PGND 4
UTC
L5201-ADJ
8 VOUT
7 FB
6 SHDN
5 SGND
SOT-26/TSOT-26
VOUT 1
6 C+
UTC
GND 2 L5201-XX 5 VIN
SHDN 3
(Fixed) 4 C -
PIN DESCRIPTION
PIN NO.
L5201-ADJ
L5201-xx
MSOP-8 SOT-26/TSOT-26
PIN
NAME
FUNCTION
1 6 C+ Flying Capacitor Positive Terminal
2
5
VIN
Input Supply Voltage, should be bypassed with at least 6.8µf lo ESR
ceramic capacitor.
3 4 C¯ Flying Capacitor Negative Terminal
4, 5
2
GND
Ground terminal, should be tied to a ground plane for best
performance
6 3 SHDN Shutdown Mode, Active-Low Input. A low on SHDN disables the
L5201 series. SHDN must not be allowed to float.
7
X
FB
Feedback Input Pin for Adjustable output. An output divider should be
connected from VOUT to FB to program the output voltage.
Regulated Output Voltage, should be bypassed with at least 6.8µf low
8 1 VOUT ESR ceramic capacitor as close as possible to the pin for best
performance
X : The pin is Inexistent for SOT-26 and TSOT-26 package.
www.DataSheet4U.com
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 7
QW-R502-107,A


Part Number L5201
Description REGULATED CHARGE PUMP DC/DC CONVERTERS
Maker Unisonic Technologies
Total Page 7 Pages
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