L5200-4.5V-AG6-R [UTC]

Switching Regulator/Controller;


型号：	L5200-4.5V-AG6-R
厂家：	Unisonic Technologies
描述：	Switching Regulator/Controller
文件：	总9页 (文件大小：218K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO.,

L5200

CMOS IC

LOW NOISE, REGULATED

CHARGE PUMP DC/DC

CONVERTERS

MSOP-8

ꢀ

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_OUTinput with up to 100mA of output current. Low external

parts counts (one flying capacitor and two small bypass capacitors

at V_INand V_OUT) make the UTC L5200-xx series ideally suited for

small, battery-powered applications.

SOT-26

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_IN

during start-up. High switching frequency enables the use of small

ceramic capacitors. A low-current shutdown feature disconnects

the load from V_INand reduces quiescent current to <1µA.

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

L5200-fixed in SOT-26 package.

*Pb-free plating product number: L5200L-xx

ꢀ

FEATURES

* Low Noise Constant Frequency Operation

* Output Current: 100mA

* 2MHz Switching Frequency

* 4.5V/5.0V Fixed Output Voltage

* V_INRange: 2.7V ~ V_OUT

* Automatic Soft-Start.

* No Inductors

* Less than 1µA of Shutdown Current

ꢀ ORDERING INFORMATION

Ordering Number

Package

Packing

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

MSOP-8

SOT-26

Tape Reel

Tube

Tape Reel

Note: xx means output voltage, refer to marking information.

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

ꢀ

PIN CONFIGURATIONS

SOT-26

MSOP-8

V^OUT

GND

V^IN

UTC

L5200-XX

(Fixed)

UTC

L5200-ADJ

V^IN

SHDN

SGND

PGND

SHDN

ꢀ

PIN DESCRIPTION

PIN NO.

PIN NAME

FUNCTION

Flying Capacitor Positive Terminal

L5200-ADJ

L5200-xx

SOT-26

MSOP-8

C+

V_IN

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

ceramic capacitor.

C¯

Flying Capacitor Negative Terminal

4, 5

GND

Ground terminal, should be tied to a ground plane for best performance

Shutdown Mode, Active-Low Input. A low on SHDN disables the L5200

series. SHDN must not be allowed to float.

SHDN

Feedback Input Pin for Adjustable output. An output divider should be

connected from V_OUTto FB to program the output voltage.

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

V_OUT

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

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

ꢀ

BLOCK DIAGRAM

UTC L5200 Adjustable version (MSOP-8)

SWITCH

CONTROL

SOFT- START

SHDN

ERROR

OSCILLATOR

AMPLIFIER

1.268V

V_OUT

CHARGE

PUMP

VIN

SGND

PGND

UTC L5200 fixed version (SOT-26)

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

SWITCH

CONTROL

SOFT- START

SHDN

V_OUT

OSCILLATOR

ERROR

AMPLIFIER

1. 268V

CHARGE

PUMP

V_IN

C ^_

GND

ꢀ

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

V_IN

RATINGS

UNIT

Input Voltage(to GND)

-0.3 ~ 6

-0.3 ~ 5.5

-0.3 ~ (V_IN+0.3)

150

Charge Pump Voltage(to GND)

Shutdown Voltage(to GND)

Maximum DC Output Current (Note 1)

V_OUTShort-Circuit Duration

Operating Temperature Range

Storage Temperature Range

V_OUT

V_FB

I_OUT

Indefinite

0 ~ +70

T_OPR

T_STG

℃

-40 ~ +150

Note 1: Based on long-term current density limitations.

2: Stressed above Absolute Maximum Ratings may impair life or cause permanent damage to the device.

3. The device is guaranteed to meet performance specification within 0℃~70℃ operating temperature range

and assured by design from –40℃~85℃, characteristic and correlation with static process control.

ꢀ

ELECTRICAL CHARACTERISTICS

(Ta =25℃, V_IN=3.6V, C_FLY=1µF, C_IN=1µF, C_OUT=1µF, unless otherwise specified.)

PARAMETER

SYMBOL

V_IN

TEST CONDITIONS

MIN

2.7

TYP

MAX UNIT

Input Supply Voltage Range

V_OUT

4.68

5.2

L5200-4.5V

L5200-5.0V

4.32

4.8

4.5

Output Voltage

V_OUT

I_OUT≤100mA

V_IH

V_IL

1.3

Shutdown Input Threshold

0.4

Feedback Voltage (For L5200-ADJ)

Output Ripple Voltage(For L5200-fixed)

Operating Supply Current

V_FB

V_R

1.217 1.268 1.319

V_IN=3V, I_OUT=100mA

I_OUT=0mA, SHDN=V_IN

SHDN=0V, V_OUT=0V

SHDN=V_IN

mV_P-P

µA

I_CC

3.5

Shutdown Current

I_SHDN

I_IH

Shutdown Input Current

-1

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

I_IL

SHDN=0V

-1

µA

Feedback Input Current (For L5200-ADJ)

I_FB

V_FB=1.4V

-50

V_IN=3V, I_OUT=100mA

V_FB=0V

Open-Loop Output Resistance

R_OL

9.2

Ω

(R_OL≡ (2V_IN– V_OUT)/I_OUT

)

Switching Frequency

F_OSC

MHz

Efficiency (For UTC L5200-fixed)

V_IN=3V, I_OUT=50mA

V_IN=3V, I_OUT=0mA

10%~90%

Soft Start Time

t_ON

0.8

Note: * stand for specifications which apply over the designed operating temperature range.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

ꢀ

TYPICAL APPLICATION CIRCUIT

Regulated 5V Output from a 2.7V ~ V_OUTInput

Output Ripple Voltage vs Load Current

IN = 3V

FLY = 1μF

1μF

Ta =25 ℃

C^_

OUT = 1μF

+4%

OUT UP~ 40 mA

IOUT UP ~ 100mA VIN ≥ 3.1V

2.7V ~ V_OUT

OUT

OUT = 5V

VIN

μF

VIN ≥ 2.7V

1μF

GND

OUT = 2.2μF

SHDN

OFF ON

UTC L5200-5.0V

100

OUTPUT CURRENT (mA)

White or Blue LED Driver with LED Current Control (UTC L5200-ADJ)

1μF

C⁺

C^-

UP TO 6 LEDS

OUT

3V~ 4.4V

Li - Ion

1μF

BATTERY

SGND

PGND

82Ω

SHDN

ON OFF

(APPLY PWM WAVEFORM FOR

SHDN

)

ADJUSTABLE BRIGHTNESS CONTROL

USB Port to Regulated 5V Power Supply ( UTC L5200-5.0V)

1µF

UTC

L5200-5.0V

V^OUT

5V±4%

50mA

USB Port

1µF

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

ꢀ

TYPICAL CHARACTERISTICS (L5200-5.0V)

Output Voltage vs Supply Voltage

Output Voltage vs Load Current

5.15

5.10

5.2

5.1

IN = COUT = CFLY = 1μF

OUT = 20mA

Ta = 25℃

Ta = 85℃

5.05

5.00

Ta = 25℃

5.0

4.9

4.8

= -40℃

VIN = 3.2V

VIN = 2.7V

VIN = 3V

4.95

4.90

4.85

100

LOAD CURRENT (mA)

200

2.7

3.0

3.3

3.6

3.9

4.2

4.5

150

SUPPLY VOLTAGE (V)

No Load Supply Current vs Supply Voltage

Oscillator Frequency vs Supply Voltage

3.0

2.8

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

IN = COUT = CFLY = 1μF

VSHDN = VIN

= 25℃

= 85℃

Ta = 25℃

= -40℃

= 85℃

= -40℃

2.7

3.0

3.3

3.6

3.9

4.5

3.0

3.3

3.6

3.9

4.5

2.7

4.2

SUPPLY VOLTAGE (V)

VSHDN Threshold Voltage vs Supply Voltage

Efficiency vs Load Current

1.1

1.0

0.9

0.8

0.7

0.6

0.5

100

IN = COUT = CFLY = 1μF

Ta = 25℃

VIN = 2.7V

= -40℃

IN = 3.2V

IN = 3.7V

IN = 4.5V

Ta = 25℃

Ta = 85℃

LOAD CURRENT (mA)

100

3.0

3.3

3.6

3.9

4.5

2.7

4.2

SUPPLY VOLTAGE (V)

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

ꢀ

TYPICAL CHARACTERISTICS (L5200-5.0V) (cont.)

Short Circuit Current vs Supply Voltage

VOUT Soft-Start Ramp

250

200

150

100

FLY = 1μF

= 25℃

OUT = 0V

SHDN

2V/DIV

OUT

1V/DIV

VIN = 3V

3.0

3.3

3.6

3.9

4.5

200μs/DIV

2.7

4.2

SUPPLY VOLTAGE (V)

Output Ripple

Load Transient Response

VOUT (AC

COUPLED)

20mV/DIV

I^L

10mA ~ 90mA

50mA/DIV

C^OUT= 1μF

C^OUT= 3.3μF

COUT = 10μF

VOUT

(AC COUPLED)

50mV/DIV

200ns/DIV

V^IN= 3.3V

I^L= 100mA

10μs/DIV

COUT = 1μF

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

L5200

CMOS IC

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

QW-R502-029,B

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