GP3843 datasheet(2/9 Pages) GTM

2 / 9 page

CORPORATION

2/9

ISSUED DATE :2004/04/19

REVISED DATE :2004/09/30B

Error Amplifier Output Sink Current

Power Dissipation at Thermal

Characteristics

P JA

1250

100

: /W

Storage Temperature Range

Tstg

-65 to 150

Operating Junction Temperature

+150

Operating ambient Temperature

0~+70

Electrical Characteristics (0 : TA 70 : ,Vcc=15V[note 2],RT=10k,CT=3.3Nf,unless otherwise specified)

Parameter

SYMBOL

Test Conditions

Typ.

Max.

Unit

Reference Section

Output Voltage

VREF

Tj=25 : ,Io=1mA

4.90

5.1

Line Regulation

Regline

Vcc=12V to 25V

2.0

Load Regulation

Regload

Io=1mA to 20mA

3.0

Temperature. Stability

0.2

mV/ :

Total Output Variation

VREF

Line, Load, Temperature

4.82

5.18

Output Noise Voltage

F=10kHz to 10Hz,Tj=25 :

Long Term Stability

TA=125 : ,1000Hrs

Output Short Circuit current

ISC

-30

-85

-180

Oscillator Section

Tj=25 :

TA=0 : to 70 :

Frequency

Tj=25 : (RT=6.2k,CT=1.0nF)

225

250

275

KHz

Frequency Change with Voltage

fosc/ V

Vcc=12V to 25V

0.2

1.0

Frequency Change with Temperature

fosc/ T

TA = 0 : to 70 :

0.5

Oscillator Voltage Swing(Peak to Peak)

VOSC

1.6

Discharge Current

Idischg

Tj=25 :

TA = 0 : to 70 :

7.8

7.6

8.3

8.8

Error Amplifier Section

Voltage Feedback Input

VFB

Vo =2.5V

2.42

2.50

2.58

Input Bias Current

IIB

VFB=5.0V

-0.1

-2.0

Open Loop Voltage Gain

AVOL

Vo=2V to 4V

Unity Gain Bandwidth

Tj=25 :

0.7

1.0

MHz

Power Supply Rejection Ratio

PSRR

Vcc=12V to 25V

Output Sink Current

Isink

Vo=1.1V,VFB=2.7V

2.0

Output Source Current

Isource

Vo=5.0V,VFB=2.3V

-0.5

-1.0

Output Voltage Swing High State

VoH

VFB=2.3V,RL=15K to GND

5.0

6.2

Output Voltage Swing Low State

VOL

VFB=2.7V,RL=15K to Vref

0.8

1.1

Current Sense section

Current Sense Input Voltage gain

(Note 3,4)

2.85

3.0

3.15

V/V

Maximum Current Sense Input Threshold Vth

(Note 3)

0.9

1.0

1.1

Power Supply Rejection Ratio

PSRR

VCC= 12 to 25V (Note 3)

Input Bias Current

IIB

-2

-10

Propagation Delay

Tplh(in/out) Current Sense Input to Output

150

300

Isink=20mA

0.1

0.4

Output Low Voltage

VOL

Isink=200mA

1.6

2.2

Isource=20mA

13.5

Output High Level

VOH

Isource=200mA

13.4

VCC=6.0V,Isink=1.0mA

0.1

1.1

Output Voltage with UVLO Activated

VOL

(UVLO)

Output Voltage Rise Time

Tj=25 : ,CL=1nF

150

Output Voltage Fall Time

Tj=25 : ,CL=1nF

150

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