Datasheet MC78FC30HT1, MC78FC33HT1, MC78FC40HT1, MC78FC50HT1 Datasheet (Motorola)

 

T

30° to +80°C

SOT–89

  

Order this document by MC78FC00/D





The MC78FC00 series voltage regulators are specifically designed for
use as a power source for video instruments, handheld communication
equipment, and battery powered equipment.

The MC78FC00 series voltage regulator ICs feature a high accuracy
output voltage and ultra–low quiescent current. Each device contains a
voltage reference unit, an error amplifier, a driver transistor, and resistors for
setting output voltage, and a current limit circuit. These devices are available
in SOT–89 surface mount packages, and allow construction of an efficient,
constant voltage power supply circuit.

MC78FC00 Series Features:

• Ultra–Low Quiescent Current of 1.1 µA Typical

• Ultra–Low Dropout Voltage (100 mV at 10 mA)

• Large Output Current (up to 120 mA)

• Excellent Line Regulation (0.1%)

• Wide Operating Voltage Range (2.0 V to 10 V)

• High Accuracy Output Voltage (±2.5%)

• Wide Output Voltage Range (2.0 V to 6.0 V)

• Surface Mount Package (SOT–89)

ORDERING INFORMATION

Output

Device

MC78FC30HT1 3.0
MC78FC33HT1 3.3
MC78FC40HT1 4.0
MC78FC50HT1 5.0

Other voltages from 2.0 to 6.0 V, in 0.1 V increments, are available upon request. Consult
factory for information.

Voltage

Operating

Temperature Range

–

°

A

= –

°

Package

–

MICROPOWER ULTRA–LOW

QUIESCENT CURRENT

VOLTAGE REGULATORS

SEMICONDUCTOR

TECHNICAL DATA

TAB

1

H SUFFIX

PLASTIC PACKAGE

CASE 1213

(SOT–89)

PIN CONNECTIONS

1

Ground

Representative Block Diagram

2

V

in

V

ref

This device contains 11 active transistors.

This document contains information on a new product. Specifications and information herein
are subject to change without notice.

MOTOROLA ANALOG IC DEVICE DATA

2

Input

3

Output

3

V

O

(Top View)

Tab

(Tab is connected
to Pin 2)

Standard Application

Input Output

1

Gnd

 Motorola, Inc. 1996 Rev 0

C

in

2

MC78FCXX

1

3

C

O

1

MAXIMUM RATINGS

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

ÁÁÁ

(TC = 25°C, unless otherwise noted.)

Rating Symbol Value Unit

Input Voltage
Power Dissipation and Thermal Characteristics

Maximum Power Dissipation

Case 1213 (SOT–89) H Suffix P
Thermal Resistance, Junction–to–Ambient R

Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range

NOTE: ESD data available upon request.

MC78FC00 Series

V

T

CC

D

θJA

T
T

A

stg

J

10

300 mW
333 °C/W

125

–30 to +80

–40 to +125

Vdc

°C
°C
°C

ELECTRICAL CHARACTERISTICS (V

Characteristic

Output Voltage

= VO + 1.0 V, IO = 10 mA, TJ = 25°C [Note 1], unless otherwise noted.)

in

Symbol Min Typ Max Unit

V

O

30HT1 Suffix (Vin = 5.0 V) 2.925 3.0 3.075
33HT1 Suffix (Vin = 6.0 V) 3.218 3.3 3.382
40HT1 Suffix (Vin = 7.0 V) 3.900 4.0 4.100
50HT1 Suffix (Vin = 8.0 V) 4.875 5.0 5.125

Line Regulation

Reg

line

–

0.1

Vin = [VO + 1.0] V to 10 V, IO = 10 mA

Load Regulation

Reg

load

–

40

Vin = [VO + 1.0], IO = 1.0 to 10 mA

Output Current

I

O

30HT1 Suffix (Vin = 5.0 V) 50 80 –
33HT1 Suffix (Vin = 6.0 V) 65 100 –
40HT1 Suffix (Vin = 7.0 V) 65 100 –
50HT1 Suffix (Vin = 8.0 V) 80 120 –

Dropout Voltage

Vin – V

O

–

0.5

IO = 40 mA

Quiescent Current

I

CC

30HT1 Suffix (Vin = 5.0 V) – 1.1 3.3
33HT1 Suffix (Vin = 5.0 V) – 1.1 3.3
40HT1 Suffix (Vin = 6.0 V) – 1.2 3.6
50HT1 Suffix (Vin = 7.0 V) – 1.3 3.9

Output Voltage Temperature Coefficient

NOTE: 1.Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

T

C

–

±100

80

0.7

V

–

mV

mV

mA

V

µA

–

ppm/°C

DEFINITIONS

Dropout Voltage – The input/output voltage differential at

which the regulator output no longer maintains regulation
against further reductions in input voltage. Measured when
the output drops 100 mV below its nominal value (which is
measured at 1.0 V differential), dropout voltage is affected by
junction temperature, load current and minimum input supply
requirements.

Line Regulation – The change in output voltage for a change
in input voltage. The measurement is made under conditions

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.

2

of low dissipation or by using pulse techniques such that
average chip temperature is not significantly affected.

Load Regulation – The change in output voltage for a
change in load current at constant chip temperature.

Maximum Power Dissipation – The maximum total device
dissipation for which the regulator will operate within
specifications.

Quiescent Bias Current – Current which is used to operate
the regulator chip and is not delivered to the load.

MOTOROLA ANALOG IC DEVICE DATA

MC78FC00 Series

Figure 1. Output Voltage versus Output Current

5.1

, OUTPUT VOL TAGE (V)
V

5.0

4.9

4.8

O

4.7

0

TA = 80

°

C

MC78FC50HT1

TA = 25

°

C

IO, OUTPUT CURRENT (mA)

TA = –30°C

Figure 2. Dropout versus Set Output Voltage

0.8

0.6

0.4

, DROPOUT VOLTAGE (V)

O

0.2

–V

in

00

0

IO = 1.0 mA

1.050

IO = 50 mA

IO = 10 mA

2.0100

3.0150

4.0 5.0 6.0200

V

, SET OUTPUT VOLTAGE (V)

reg

MC78FC00 Series

TA = 25

Figure 3. Quiescent Current versus Temperature Figure 4. Dropout Voltage versus Output Current

, DROPOUT VOLTAGE (V) V
–V

V

0.8

0.6

0.4

O

0.2

in

MC78FC50HT1

TA = 25

TA = 80

°

C

°

C

TA = –30°C

1.5

1.3

1.1

0.9

, QUIESCENT CURRENT (mA)

0.7

CC

I

MC78FC50HT1

°

C

7.0250

0.5
–20 0 20 40 60 80 100 120

–40

TA, AMBIENT TEMPERATURE (°C)

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

INPUT VOLTAGE/OUTPUT VOL TAGE (V)

1.0
0

0

0

20

IO, OUTPUT CURRENT (mA)

Figure 5. Line Transient Response

Input Voltage

Output Voltage

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
t, TIME (ms)

40

60

80

100

MOTOROLA ANALOG IC DEVICE DATA

3

MC78FC00 Series

APPLICATIONS INFORMATION

Introduction

The MC78FC00 micropower voltage regulators are
specifically designed with internal current limiting and low
quiescent current making them ideal for battery powered
applications. An input bypass capacitor is recommended if
the regulator is located an appreciable distance (≥ 4 inches)
from the input voltage source. These regulators require

0.1 µF capacitance between the output terminal and ground
for stability. Most types of aluminum, tantalum or multilayer
ceramic will perform adequately. Solid tantalums or other
appropriate capacitors are recommended for operation
below 25°C. The bypass capacitors should be mounted with
the shortest possible leads or track lengths directly across
the regulator input and output terminals.

With economical electrolytic capacitors, cold temperature
operation can pose a serious stability problem. As the
electrolyte freezes, around –30°C, the capacitance will
decrease and the equivalent series resistance (ESR) will
increase drastically, causing the circuit to oscillate. Quality
electrolytic capacitors with extended temperature ranges of
–40° to +85°C are readily available. Solid tantalum
capacitors may be the better choice if small size is a
requirement. However, a maximum ESR limit of 3.0 Ω must
be observed over temperature to maintain stability .

Figure 6 is a typical circuit application. Figure 7 is a current
boost circuit which can deliver more than 600 mA. The circuit
has no current limiting and the external transistor must be
rated for the expected power dissipation.

V

in

Gnd

Gnd

10

Figure 6. T ypical Application

V

in

µ

F

0.1

23

MC78FC00

V

O

0.1

µ

F

1

Gnd

Figure 7. Current Boost Circuit

MJD32C

.033 µF

23

MC78FC00

100

µ

F

0.1 µF

1

V

O

µ

F

0.1

Gnd

OUTLINE DIMENSIONS

H SUFFIX

PLASTIC PACKAGE

CASE 1213

(SOT–89)

ISSUE O

A

E

D

D1

B

A2

C

E1

L1

B

M

0.10 CSBSA

C

B1 2X

e

M

0.10 CSBSA

e1

How to reach us:

USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAP AN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,

P.O. Box 5405, Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447 3–14–2 T atsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315

Mfax: [e-mail] – TOUCHTONE 602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,

INTERNET: http://Design–NET.com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

NOTES:

1. DIMENSIONS ARE IN MILLIMETERS.

2. INTERPRET DIMENSIONS AND TOLERANCING
PER ASME Y14.5M, 1994.

3. DATUM C IS A SEATING PLANE.

MILLIMETERS

DIM MIN MAX

A2 1.40 1.60

B 0.37 0.57

B1 0.32 0.52

C 0.30 0.50
D 4.40 4.60

D1 1.50 1.70

E ––– 4.25

E1 2.40 2.60

e 1.50 BSC
e1 3.00 BSC
L1 0.80 –––

Mfax is a trademark of Motorola, Inc.

4

◊

MOTOROLA ANALOG IC DEVICE DATA

MC78FC00/D