IMP38HC45ESA datasheet(4/10 Pages) A1PROS

4 / 10 page

IMP38C/HC/42/3/4/5

408-432-9100/www.impweb.com

Absolute Maximum Ratings

VCC Supply Voltage . . . . . . . . . . . . . . . . . . . . . . 20V

VCC Supply Current . . . . . . . . . . . . . . . . . . . . . . 30mA

IOUT Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0A

Current-Sense and Feedback Inputs . . . . . . . . 0.3V to 5.5V

Operation Junction Temperature . . . . . . . . . . . +150

°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . – 65

°C to +150°C

Lead Soldering Temperature (10 seconds) . . . +300

°C

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Reference

Output voltage

VREF

TA = +25

°C, IO = 1mA

4.90

5.00

5.10

Line Regulation

12V

≤ VCC ≤ 18V, IOUT = 5µA2

Load Regulation

1mA

≤ IO ≤ 20mA

Temperature Stability

TCREF

Note 1

0.2

mV/

°C

Total Reference Variation

Line, Load, Temperature, Note 1

4.82

5.18

Output Noise Voltage

10Hz

≤ f ≤ 10kHz, TA = +25°C, Note 1

µV

Long Term Stability

TA = 125

°C, 1000 Hours, Note 1

TBD

Output Short Circuit

ISC

– 30

– 40

– 180

Oscillator Section

Initial Accuracy

fINIT

TA = 25

°C, Note 5

kHz

Voltage Stability

12V

≤ VCC ≤ 18V

0.2

1.0

Temperature Stability

TCOSC

Note 1

0.04

°C

Discharge Current

VRT/CT = 2V

7.2

8.4

12.0

Amplitude peak-to-peak

VOSC, P-P

VRT/CT peak-to-peak

1.1

1.7

2.3

Error Amplifier Section

Input Voltage

VIN

VCOMP = 2.5V

2.45

2.50

2.55

Input Bias Current

VFB = 4.5V

–11

µA

Open Loop Gain

AVOL

≤ VO ≤ 4V, Note 1

Unity Gain Bandwidth

UGBW

Note1

0.7

1.0

MHz

Power Supply Rejection Ratio

PSRR

VSTART

≤ VCC ≤ VCCMAX

Output Sink Current

IOL

VFB = 2.7V, Vcomp = 1.1V

Output Source Current

IOH

VFB = 2.3V, Vcomp = 5.0V

– 0.5

– 1.0

VOUT High

VOH

VFB = 2.3V, RL = 15k

Ω to ground

4.5

4.6

5.0

VOUT Low

VOL

VFB = 2.7V, RL = 15k

Ω to VREF

0.30

0.50

Unless otherwise noted, VCC = 15V, RT = 10k

Ω and CT = 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range.

Bold/blue

specifications indicate enhanced performance features.

Electrical Characteristics

Package Thermal Resistance

8-Pin Plastic DIP (

θJA) . . . . . . . . . . . . . . . . . 125°C/W

8-Pin MicroSO (

θJA) . . . . . . . . . . . . . . . . . . . 250°C/W

8-Pin SO (

θJA) . . . . . . . . . . . . . . . . . . . . . . . . 170°C/W

14-Pin Plastic DIP (

θJA) . . . . . . . . . . . . . . . . 90°C/W

14-Pin SO (

θJA) . . . . . . . . . . . . . . . . . . . . . . . 145°C/W

Note: All voltages are referenced to GND.

These are stress ratings only and functional operation is not

implied. Exposure to absolute maximum ratings for prolonged

time periods may affect device reliability.

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