U211B 데이터 시트보기 (PDF) - Atmel Corporation

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U211B

Phase Control IC with Overload Limitation for Tacho Applications

Atmel Corporation 

2. Pin Configuration

Figure 2-1. Pinning DIP18

Isync 1

GND 2

VS 3

Output 4

Retr 5

VRP 6

CP 7

F/V 8

CRV 9

U211B

18 PB/TM

17 Vsync

16 VRef

15 OVL

14 Isense

13 Csoft

12 CTR/OPO

11 OP+

10 OP-

Table 2-1.

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Pin Description

Symbol Function

Isync

GND

Current synchronization

Ground

VS

Output

Supply voltage

Trigger pulse output

Retr

Retrigger programming

VRP

Ramp current adjust

CP

Ramp voltage

F/V

Frequency-to-voltage converter

CRV

Charge pump

OP-

OP inverting input

OP+

OP non-inverting input

CTR/OPO Control input/OP output

Csoft

Isense

OVL

Soft start

Load-current sensing

Overload adjust

VRef

Vsync

PB/TM

Reference voltage

Voltage synchronization

Pulse blocking/tacho monitoring

2 U211B

4752B–INDCO–09/05

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