UTC L5200G-45-AG6, L5200G-50-AG6, L5200G-AD-AG6, L5200G Schematic [ru]

UNISONIC TECHNOLOGIES CO., LTD

L5200

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 ~ V
input with up to 100mA of output current. Low external parts counts
(one flying capacitor and two small bypass capacitors at V

) make the UTC L5200-xx series ideally suited for small,

V

OUT

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 V
start-up. High switching frequency enables the use of small ceramic
capacitors. A low-current shutdown feature disconnects the load from
V

and reduces quiescent current to <1μA.

IN

The L5200-ADJ is available in MSOP-8 package and

L5200-fixed in SOT-26 and TSOT-26 package.

IN

during

IN

OUT

and

CMOS IC

 FEATURES

* Low Noise Constant Frequency Operation
* Output Current: 100mA
* 2MHz Switching Frequency
* 4.5V/5.0V Fixed Output Voltage
* V

Range: 2.7V ~ V

IN

* Automatic Soft-Start.
* No Inductors
* Less than 1μA of Shutdown Current

OUT

 ORDERING INFORMATIO N

Ordering Number Package Packing

L5200L-AD-SM1-R MSOP-8 Tape Reel

L5200L-45-AG6-R SOT-26 Tape Reel
L5200L-50-AH6-R TSOT-26 Tape Reel

Note: xx: Output Voltage, Refer to Marking Information

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L5200

 MARKING INFORMATION

PACKAGE VOLTAGE CODE MARKING

MSOP-8

CMOS IC

45: 4.5V
50: 5.0V
AD :ADJ

SOT-26

6

LE G

TSOT-26

 PIN CONFIGURATIONS

MSOP-8

C

V

C

PGND

+

IN

-

1

2

3

L5200-ADJ

4

UTC

8

7

6

5

OUT

V

FB

SHDN

SGND

V

GND

SHDN

 PIN DESCRIPTION

PIN NO.

L5200-ADJ L5200-xx

MSOP-8 SOT-26/TSOT-26

1 6 C+ Flying Capacitor Positive Terminal

2 5 VIN

3 4 C¯ Flying Capacitor Negative Terminal

4, 5 2 GND

6 3

7 X FB

8 1 V

X : The pin is Inexistent for SOT-26 and TSOT-26 package.

PIN

NAME

SHDN

OUT

Input Supply Voltage, should be bypassed with a 1μF~4.7μf low ESR
ceramic capacitor.

Ground terminal, should be tied to a ground plane for best
performance
Shutdown Mode, Active-Low Input. A low on
L5200 series.

must not be allowed to float.

SHDN

Feedback Input Pin for Adjustable output. An output divider should be
connected from V

to FB to program the output voltage.

OUT

Regulated Output Voltage, should be bypassed with a 1μF~4.7μF low
ESR ceramic capacitor as close as possible to the pin for best
performance

5

4

21

3

SOT-26/TSOT-26

1

OUT

2

3

FUNCTION

Voltage Code

UTC

L5200-XX

(Fixed)

+

6

C

VIN

5

-

C

4

disables the

SHDN

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L5200

 BLOCK DIAGRAM

UTC L5200 Adjustable version (MSOP-8)

CMOS IC

UTC L5200 fixed version (SOT-26/TSOT-26)

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