ST1843 datasheet(7/25 Pages) STMICROELECTRONICS

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ST1843 - ST1845

Electrical characteristics

Doc ID 019049 Rev 1

7/25

VOH

VOUT high

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF,

VPIN2 = 2.3V, RL = 15kΩ to GND

VOL

VOUT low

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF,

VPIN2 = 2.3V, RL = 15kΩ to GND

1.1

Current sense section

4004

Gain

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF,

(2) (3)

2.85

3.15

V/V

Maximum input signal

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF,

VPIN1 = 2.3V

(2)

0.9

1.1

SVR

Supply voltage rejection

≤ V

i ≤ 25V; RT = 10kΩ;

CT = 3.3nF,

(1)

4001

Input bias current

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

-10

3003

Delay to output

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

300

Output section

VOL1

3007

Output low level

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF;

ISINK = 20mA

0.4

VOL2

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF;

ISINK = 200mA

2.2

VOH1

3006

Output high level

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF;

ISOURCE = 20mA

VOH2

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF;

ISOURCE = 200mA

VOLS

UVLO saturation

VI = 6V

(1); R

T = 10kΩ; CT = 3.3nF;

ISINK = 1mA

1.1

3004

Rise time

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF;

CL = 1nF

150

Fall time

150

Under-voltage lockout section

VTH

Start threshold

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

7.8

VMIN

Min operating voltage after

turn-on

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

8.2

DCMAX

Max duty cycle for ST1843

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

Max duty cycle for ST1845

100

DCMIN

Min duty cycle

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

Total standby current

Ist

Start-up current

VI = 15V

(1); R

T = 10kΩ; CT = 3.3nF

0.5

Table 5.

Electrical characteristics (continued)

Symbol

MIL-STD-

883 test

method

Parameter

Test conditions

Values

Unit

Min.

Max.

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