DS1842N+R datasheet(4/6 Pages) MAXIM

Part #	DS1842N+R

Description	76V, APD, Bias Output Stage with Current Monitoring

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Manufacturer	MAXIM [Maxim Integrated Products]

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76V, APD, Bias Output Stage with

Current Monitoring

4

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

FET ON-RESISTANCE vs. DRAIN CURRENT

IDS (mA)

100

10

4

5

6

7

3

1

1000

VGS = 2.5V

VGS = 3.0V

VGS = 3.6V

VGS = 5V

VGS = 10V

FET DRAIN CURRENT vs. DRAIN VOLTAGE

DRAIN VOLTAGE (V)

3

2

1

100

200

300

400

500

600

700

0

04

VGS = 2.5V

VGS = 3.0V

VGS = 3.6V

VGS = 5V

VGS = 10V

Pin Description

NAME

FUNCTION

1

MIR1

Current Mirror Monitor Output, 10:1 Ratio

2

MIR2

Current Mirror Monitor Output, 5:1 Ratio

3

N.C.

No Connection. Can be connected to

GND for compatibility with the DS1842A.

4,

9–12

N.C.

No Connection. Not internally

connected.

5

CLAMP

Clamp Input. Disables the current mirror

output (MIROUT).

6

GATE

FET Gate Connection

7

GND

Ground

8

LX

FET Drain Connection. Connect to

switching inductor.

13

MIRIN

Current Mirror Input

14

MIROUT

Current Mirror Output. Connect to APD

bias pin.

—

EP

Exposed Pad. Connect to ground.

Block Diagram

DS1842

LX

GATE

GND

MIRIN

MIR1

CLAMP

MIROUT

CURRENT MIRROR

CURRENT

LIMIT

MIR2

THERMAL

SHUTDOWN

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