SPX29150T-1.8 データシートの表示（PDF） - Signal Processing Technologies

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SPX29150T-1.8

1.5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response Time

Signal Processing Technologies 

ELECTRICAL CHARACTERISTICS

at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 10µF, TA = 25°C, unless otherwise specified. The Boldface applies

over the junction temperature range. Adjustable versions are set to 5.0V.

PARAMETER

CONDITIONS

FLAG OUTPUT (ERROR COMPARATOR)

TYP

MIN MAX UNITS

SPX29150/29151/29153

Output Leakage

Current

VOH=16V

0.1

1

µA

2

Output Low Voltage

Device set for 5V,VIN=4.5V, IOL=250µA

200

300

mV

400

Upper Threshold

Voltage

Device set for 5V, (Note 5)

60

40

mV

25

Lower Threshold

Voltage

Device set for 5V, (Note 5)

75

95

mV

140

Hysteresis

Device set for 5V, (Note 5)

15

mV

ENABLE Input

SPX29151/29152

Input Logic Voltage

Low (OFF)

High (ON)

VIN<10V

0.8

V

2.4

ENABLE Input Pin

VEN=16V

VEN=0.8V

100

600

µA

750

1

µA

2

Regulator Output

Current in Shutdown

(Note 6)

10

500

µA

Thermal Resistance

TO-200 Junction to Case, at Tab

3

TO-220 Junction to Ambient

60

TO-263Junction to Case, at Tab

3

TO-263 Junction to Ambient

60

°C/W

NOTES:

Note 1: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its nominal value.

Note 2: VIN = VOUT (NOMINAL) +1V. For example, use VIN = 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.

Note 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.

Note 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation

effects.

Note 5: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To

express these thresholds in terms of output voltage change, multiply the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmable

output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Threshold remain constant as a percent of

VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.

Note 6: VEN ≤ 0.8V and VIN ≤ 16V, VOUT = 0.

Note 7: Maximum positive supply voltage of 20V must be of limited duration (<100m_) < 1%. The maximum continuous supply voltage is 16V.

Note 8: VREF≤ VOUT ≤ (VIN-1), 2.5V≤VIN ≤ 16V, 10mA ≤ IL ≤ IFL, Tj < Tjmax.

BLOCK DIAGRAM

IN

OUT

FLAG

+ 1.180V Reference 1.240V +

O.V

I LIMIT

28V

R1*

-

-

ADJ

EN

Thermal

Shutdown

R2*

Date:5/25/04

SP29150/51/52/53 1.5A Low Dropout Voltage Regulator

3

GND

© Copyright 2004 Sipex Corporation

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