FA7615CE资料

The FA7615CP(E) is a bipolar IC containing basic circuit

necessary for PWM-type switching power supply control. ThisIC can be operated by external synchronizing pulses.

Bipolar ICFor Switching Power Supply ControlFA7615CP(E)sDimensions, mm󰀂SSOP-16

16

9

sFeatures

•

•••

External synchronization input terminalLow-voltage operation (VCC = 3.6 to 22V)Totem-pole predriver

Latch-mode short-circuit protection function (no malfunctiondue to electrical noise)

•One capacitor shared for short-circuit protection and for soft-start to minimize the number of external discrete components

5.37.9±0.30.1±0.16.2+0.118 –0.050.2sApplications

•Battery power supply for portable equipment

0.30.650~10˚0.6󰀂DIP-16

16910.8119.41.583.1min4.3max0.2min3.46.50 –0.0.3+0.157.62.54±0.250.5±0.10~15˚5˚0~1sBlock diagram

PinNo.123456710111213141516

Pinsymbol

Description

Oscillator timing capacitorCapacitor for soft-start,short-circuit protection and delayDead time adjustmentNon-inverting input to erroramplifier

Inverting input to error amplifierError amplifier outputGroundCH. 2 OutputPower supply

CH. 1 Current limiting resistorCH. 1 OutputError amplifier output

Inverting input to error amplifierDead time adjustmentExternal synchronization inputReference voltage output (2.5V)

CTCSDT2IN2 (+)IN2 (–)FB2GNDOUT2VCCOUT1ROUT1FB1IN1 (–)DT1

SYNC

REF

2.1max1

元器件交易网www.cecb2b.com

FA7615CP(E)

s Absolute maximum ratings

Item

Supply voltage

Symbol

Rating225±50400–20 to +85–40 to +150

UnitVmAmAmW°C°C

s Recommended operating conditions

Item

Supply voltageFeedback resistanceOscillator timing capacitorOscillator timing resistanceOscillation frequency

Symbol

Min.3.6100220105

22,000100200Max.20

UnitVkΩpFkΩkHz

VCC

Reference voltage output currentIOROutput currentIOTotal power dissipationPd

Operating temperatureStorage temperature

VCC

RNFCTRTfOSC

ToprTstg

s Electrical characteristics (Ta = 25°C, VCC = 6V, RT = 47kΩ, CT = 1000pF)Reference voltage section

Item

Output voltageLine regulationLoad regulation

Output voltage variation due to temperature change

Symbol

Test condition

Min.

Typ.2.43241

Max.2.48112611

UnitVmVmV%%

VREFLINELOADVTC1VTC2

IOR = 1mA2.383VCC = 3.6 to 20V, IOR = 1mAIOR = 0.1 to 1mA

Ta = –20 to +25°CTa = +25 to +85°C

–1–1

Oscillator section

Item

Oscillation frequency

Frequency variation 1 (due to supply voltage change)Frequency variation 2 (due to temperature change)Synchronizing terminal input currentSynchronizing terminal input voltage

Symbol

Test condition

Min.17

Typ.20150.4

1

1.02.5Max.23

UnitkHz%%mAV

fOSCfdVfdTISYNCVSYNC

CT = 1000pF, RT = 47kΩVCC = 3.6 to 20V

Ta = –20 to +85°C

VSYNC = 2V

Error amplifier section

Item

Reference voltageInput bias currentOpen-loop voltage gainUnity-gain bandwidth

Maximum output voltage (Pin 6 and Pin 12)Output source current (Pin 6 and Pin 12)

Symbol

Test condition

Min.0.48470

1.0

RNF = 100kΩ

Typ.0.4945

Max.0.504100

UnitVnAdBMHzV

200

40

85

200

mV

VBIBAVGBVOM+VOM– IOM+

RNF = 100kΩVOM = 1V

VREF–0.2µA

PWM comparator section

Item

Input threshold voltage (Pin 6 and Pin 12)Input threshold voltage (Pin 6 and Pin 12)

Symbol

Test conditionDuty cycle = 0%Duty cycle = 50%

Min.

Typ.0.380.6

Max.0.48

UnitVV

VTH0VTH50

2

元器件交易网www.cecb2b.com

FA7615CP(E)

Dead time adjustment circuit section

Item

Input bias current (Pin 3 and Pin 14)Input threshold voltage (Pin 3 and Pin 14)Input threshold voltage (Pin 3 and Pin 14)

Symbol

Test conditionDuty cycle = 0%Duty cycle = 50%

Min.

Typ.800.380.60

Max.3000.48

UnitnAVV

IBDT

VTH DT0VTH DT50

Short-circuit protection circuit section

Item

Input threshold voltage (Pin 6 and Pin 12)Charge current (Pin 2)

Latch-mode threshold voltage (Pin 2)

Symbol

Test condition

Min.1.60

Pin 2 = 0V, Pin 6, Pin 12 = 2V18

1.60

Typ.1.80301.80

Max.2.00422.00

UnitV

VTH PCICHGVTH LA

µAV

Undervoltage lockout section

Item

OFF-to-ON threshold voltageON-to-OFF threshold voltageVoltage hysteresis

Symbol

Test condition

Min.

Typ.2.652.6050

Max.

UnitVVmV

VTH ONVTH OFFVHYS

Output section

Item

Output saturation voltage

H-level (CH.1)

Symbol

Test condition

Output source current = 20mAOutput sink current = 20mAPin 11 = 0V

619Min.

Typ.0.30.31127

Max.0.80.81536

UnitVVmAmA

VO1H

L-level (Common to CH.1 and CH.2)VO1L/2L

CH. 1 Output source current (Pin 11)ISOURCE1CH. 2 Output source current (Pin 8)ISOURCE2

VCC = 16V, Pin 8 = 0V

Overall device

Item

Supply current

Operating-state supply current

Symbol

Test conditionLatch mode

Min.

Typ.2.03.5

Max.3.06.0

UnitmAmA

ICC LA

ICC AV

RL = ∞ Duty cycle = 50%

3

元器件交易网www.cecb2b.com

FA7615CP(E)

sCharacteristic curves (Ta = 25°C)

Oscillation frequency (fOSC) vs.timing resistor resistance (RT)

4

Output duty cycle vs. CS terminal voltage (VCS)

元器件交易网www.cecb2b.com

FA7615CP(E)

L-level output voltage (VOL) vs. output sink current (ISINK)

Supply current (ICC) vs. supply voltage (VCC)

5

元器件交易网www.cecb2b.com

FA7615CP(E)

sApplication circuit

󰀂 Flyback-transformer type and chopper type boost converter circuit

Fuji Semiconductor, Inc. - P.O. Box 702708 - Dallas, TX 75370 - 972-733-1700 - www.fujisemiconductor.com6