L2800L-S08-R Ver la hoja de datos (PDF) - Unisonic Technologies

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Fabricante

L2800L-S08-R

SWITCHING REGULATOR CONTROLLER(LOW VOLTAGE)

Unisonic Technologies 

L2800

LINEAR INTEGRATED CIRCUIT

„ ELECTRICAL CHARACTERISTICS (TA=25°C, VCC=+2V)

PARAMETER

SYMBOL

TEST CONDITIONS

CIRCUIT TO PREVENT MALFUNCITION AT LOW INPUT OLTAGE (U.V.L.O)

Reset Voltage

VR

Threshold Voltage

VTH

Soft Start

Charging Current

ICS

VSCP=0V

Voltage at soft start completion

VTS

Short Circuit Detection(S.C.P.)

Charging Current

ICPC VSCP=0V

Threshold Voltage

VTPC

SAWTOOTH WAVE OSCILLATOR(OSC)

Oscillation Frequency

fOSC RT=3.0kΩ, CT=270pF

Frequency Input Stability

Frequency Variation With Temperature

ERROR AMPLIFIER

fDV VCC=2V ~ 15V

fDT TA=-30°C ~ +85°C

Input Threshold Voltage

VT

VFB=450mV

VT Input Stability

VT Variation With Temperature

VTDV

VTDT

VCC=2V ~ 15V

TA= -30°C ~ +85°C

Input Bias Current

IB

VIN=0V

Voltage Gain

Av

Frequency Bandwidth

Maximum Output Voltage Range

Output Source Current

Output Sink Current

BW

VOM+

VOM-

IOM+

IOM-

AV=0dB

VFB=0.45V

IDLE PERIOD ADJUSTMENT SECTION

Maximum Duty Cycle

tDUTY RT=3.0kΩ, CT=270pF, VFB=0.8V

OUTPUT SECTION

Output Voltage

Output Source Current

Output Sink Current

VOH1

VOH2

VOL1

VOL2

IO+

IO-

RB=390Ω, Io=-15mA

RB=750Ω, VCC=1.8V, Io= -10mA

RB=390Ω, Io=15mA

RB=750Ω, VCC=1.8V, Io=10mA

RB=390Ω, Vo=0.9V

RB=390Ω, Vo=0.3V

Pull Down Resistance

RO

OUTPUT CURRENT SETTING SECTION/CONTROL SECTION

Pin Voltage

VBR RB=390Ω

Input Off Condition

IOFF

Input On Condition

ION

Pin Current Range

IBR

ENTIRE DEVICE

Stand-by Current

Average Supply Current

ICCS BR/CTL pin open or VCC

ICC

RB=390Ω

MIN TYP MAX UNIT

0.9 V

1.1 1.3 1.5 V

-1.5 -1.0 -0.7 μA

0.7 0.8 0.9 V

-1.5 -1.0 -0.7 μA

0.7 0.8 0.9 V

400 500 600 kHz

2 10 %

5

%

480 500 520 mV

5 20 mV

1

%

-1.0 -0.2 1.0 μA

70 100 145 V/V

6

MHz

0.78 0.87

V

0.05 0.2 V

-40 -24 μA

24 40

μA

65 75 85 %

1.0 1.2

V

0.8 1.0

V

0.1 0.2 V

0.1 0.2 V

-30 -20 mA

30 60

mA

20 30 40 kΩ

0.2 0.3 0.4 V

-20

0 μA

-45 μA

-1.8

-0.1 mA

1 μA

5.5 9.3 mA

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

4 of 7

QW-R103-030,B

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