LX1670

PRODUCT DA T ABOOK 1996/1997

3

Copyright © 1997

Rev. 1.0

7/97

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for LX1670C with 0°C

≤ T

10.8V < V

Nominal conditions: V

Currents flowing into chip are

positive. Current maximums are currents with the highest possible value.)

Power Supply Current and Power Section

Parameter

Symbol

Test Conditions

Positive 12V Supply Current

I

CC

All outputs, inputs unloaded

Units

5mA

Digital-to-Analog Converter Section

Voltage Set Point Accuracy

VSPA

D0-D3 = X, D4 = Open, 2.00

≤ VIDO ≤ 3.50V

D0-D3 = X, D4 = GND, 1.80

≤ VIDO ≤ 2.05V

LSB

VSTP

D4 = Open

D4 = GND

Coding

Binary, D0 = LSB, D3 = MSB

Percent of VIDO Threshold

OVPTH

OVP Sourcing Current

IOVP

OVP = 3.0V

OVP Output Low

VLOVP

IOVP = 100µA

Under-Voltage Lockout Section

Under/Over-Voltage Comparator Section

Percent of VIDO Threshold

UOVTH

P

VLG

I

Over-Voltage Protection Comparator Section

Power-up Reset

V

RES

I

Threshold

UVLOT

V

Hysteresis

UVLOH

V

LX1670

Min.

Typ.

Max.

(Includes DAC, I-V Converter and output scaling amplifier. R

-1.0

1.0

%

-1.5

1.5

%

100

mV

50

mV

1.0

V

4.27

4.37

4.47

V

50

mV

±5.5

±7

±8.5

%

0.2

0.4

V

10

15

20

%

-20

mA

100

mV

Input Low Voltage

V

IL

Input High Voltage

V

IH

Input Low Current

I

IL

V

Input High Current

I

IH

V

TTL Inputs Section

0.8

V

2.0

V

-10

µA

0µA

Open Drain Inputs Section

-37.5

µA

2.0

V

Input Low Current

I

IL

Pin Ground

Input High Voltage

V

IH

Pin Open

(D0-D3, D4)