UC1833 datasheet(3/8 Pages) TI

Teilenummer	UC1833

Bauteilbeschribung	Precision Low Dropout Linear Controllers

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Hersteller	TI [Texas Instruments]

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PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Input Supply

Supply Current

+VIN = 6V

6.5

10

mA

+VIN = 36V

9.5

15

mA

Logic Disable = 2V (UCx832 only)

3.3

mA

Reference Section

Output Voltage (Note 3)

TJ = 25

°C, IDRIVER = 10mA

1.98

2.00

2.02

V

over temperature, IDRIVER = 10mA

1.96

2.00

2.04

V

Load Regulation (UCx832 only)

IOUT = 0 to 10mA

-10

-5.0

mV

Line Regulation

+VIN = 4.5 to 36V, IDRIVER = 10mA

0.033

0.5

mV/V

Under-Voltage Lockout Threshold

3.6

4.5

V

Logic Disable Input (UCx832 only)

Threshold Voltage

1.3

1.4

1.5

V

Input Bias Current

Logic Disable = 0V

-5.0

-1.0

µA

Current Sense Section

Comparator Offset

95

100

105

mV

Over Temperature

93

100

107

mV

Amplifier Offset (UCx833 only)

110

135

170

mV

Amplifier Offset (UCx832 only)

VADJ = Open

110

135

170

mV

VADJ = 1V

180

235

290

mV

VADJ = 0V

250

305

360

mV

Input Bias Current

VCM = +VIN

65

100

135

µA

Input Offset Current (UCx832 only)

VCM = +VIN

-10

10

µA

Amplifier CMRR (UCx832 only)

VCM = 4.1V to +VIN+0.3V

80

dB

Transconductance

ICOMP =

±100µA65

mS

VADJ Input Current (UCx832 only)

VADJ = 0V

-10

-1

µA

Timer

Inactive Leakage Current

C/S(+) = C/S(-) = +VIN; TRC pin = 2V

0.25

1.0

µA

Active Pullup Current

C/S(+) = +VIN, C/S(-) = +VIN - 0.4V; TRC pin = 0V

-345

-270

-175

µA

Duty Ratio (note 4)

ontime/period, RT = 200k, CT = 0.27

µF4.8

%

Period (notes 4,5)

ontime + offtime, RT = 200k, CT = 0.27

µF

36

ms

Upper Trip Threshold (Vu)

1.8

V

Lower Trip Threshold (Vl)

0.9

V

Trip Threshold Ratio

Vu/Vl

2.0

V/V

Error Amplifier

Input Offset Voltage (UCx832 only)

VCM = VCOMP = 2V

-8.0

8.0

mV

Input Bias Current

VCM = VCOMP = 2V

-4.5

-1.1

µA

Input Offset Current (UCx832 only)

VCM = VCOMP = 2V

-1.5

1.5

µA

AVOL

VCOMP = 1V to 13V

50

70

dB

CMRR (UCx832 only)

VCM = 0V to +VIN - 3V

60

80

dB

PSRR (UCx832 only)

VCM = 2V, +VIN = 4.5 to 36V

90

dB

Transconductance

ICOMP =

±10µA4.3

mS

VOH

ICOMP = 0, Volts below +VIN

.95

1.3

V

VOL

ICOMP = 0

.45

0.7

V

IOH

VCOMP = 2V

-700

-500

-100

µA

UC1832/3

UC2832/3

UC3832/3

Unless otherwise stated, specifications hold for TA = 0°C to 70°C for the

UC3832/3, –25°C to 85°C for the UC2832/3, and –55°C to 125°C for the

UC1832/3, +VIN = 15V, Driver sink = +VIN, C/S(+) voltage = +VIN. TA=TJ.

ELECTRICAL CHARACTERISTICS:

3

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