LTC2995C Просмотр технического описания (PDF) - Linear Technology

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LTC2995C

Temperature Sensor and Dual Voltage Monitor with Alert Outputs

Linear Technology 

LTC2995

PIN FUNCTIONS

resistor between VPTAT and the load to ensure stability.

VPTAT is pulled low when the supply voltage goes below

the under voltage lockout threshold.

VREF: Voltage Reference Output. VREF provides a 1.8V

reference voltage. VREF can drive up to ±200μA of load

current and up to 1000pF of capacitive load. For larger

load capacitances insert 1kΩ between VREF and the load

to ensure stability. Leave VREF open if unused.

VT1: Temperature Threshold 1. When VPTAT crosses the

voltage on VT1 with a polarity set by the PS pin, TO1 is

pulled low. Tie VT1 to GND if unused.

VT2: Temperature Threshold 2. When VPTAT crosses the

voltage on VT2 with a polarity set by the PS pin, TO2 is

pulled low. Tie VT2 to VCC if unused.

BLOCK DIAGRAM

9

VCC

8

VH1

20

VL1

1

VH2

2

VL2

3

11 VREF

VT2

4

VT1

5

8 VPTAT

–

CH1

+

–

CL1

+

–

CH2

+

–

CL2

200kΩ

+

1.3MΩ

0.5V

500k

1.8V

200k

400k

–

CT2

+

UVLO

1.2V

–

CT1

+

2V

VCC

UVLO

T TO V

1

CONVERTER

3 STATE

DECODE

DS

18

D–

D+

7

6

16

TMR VCC

400k

UV PULSE

GENERATOR

UV 15

OSCILLATOR

OV PULSE

GENERATOR

VCC

400k

OV 14

TO1/TO2

PULSE

GENERATOR

3 STATE

DECODE

VCC

400k

TO2

13

VCC

400k

TO1

12

PS

19

GND

17

2995 BD

2995f

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