Diodes AP78L05, AP78L08, AP78L12 User Manual

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AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

Description

The AP78LXX Series is a three terminal positive regulator available with fixed output voltages from 5V, 8V and 12V, making them useful in a wide range of applications. When used as a Zener diode/resistor combination replacement, the AP78LXX can improve output impedance by two orders of magnitude, and lower quiescent current. These regulators can provide local on card regulation, eliminating the distribution problems associated with single point regulation. The voltages available allow the AP78LXX's to be used in logic systems. Instrumentation, HiFi and other solid state electronic equipment.

The AP78LXX is available in the plastic TO92, SOT89 and SO-8 using industrial standard package technology. The regulator can deliver 100mA output current with adequate heat sinking. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. Thermal overload protection is integrated to prevent the IC from overheat due to abnormal condition.

Features

Pin Assignments

(Bottom View)

V

1

V

OUT

GND

2 3

GND

NC

4

AP78L05/08/12

V

GND

OUT

TO92

(To p V iew)

SO-8

Top View

IN

V

8

IN

GND

7 6

GND NC

5

• Output voltages of 5.0V, 8.0V, 12V

• Output voltage tolerances of ±5% over the operating

temperature ranges

• Output current in excess of 100mA

• Internal thermal overload protection

• Output transistor safe area protection

• Internal short circuit current limiting

• No external components

• Available in plastic TO92, SOT89 and plastic SO-8 low

profile packages

• Lead Free Package: TO92 (Note 1)

• SO-8 and SOT89: Available in “Green” Molding

Compound (No Br, Sb) (Note 2)

• Lead Free Finish / RoHS Compliant (Note 3)

Applications

• Communication

• CD-ROM

• DVD-Player

• Set-Top Box

123

GND

V

OUT

SOT8

IN

Notes: 1. TO92 is available in “Lead Free” product only.

2. SO-8 and SOT89 are available in “Green” products only.

3. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2). All applicable RoHS exemptions applied.

AP78L05/08/12

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Typical Application Circuit

AP78L05/08/12

AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

Fixed Output Regulator

Input Output

†

C1

AP78Lxx

GND

0.33µF

(†) Required if the regulator is located more than 3” from the power supply filter (‡) See Note 5 in the electrical characteristics table

IN

OUT

‡

C2

0.1µF

Pin Descriptions

Pin Name Description

VIN V

OUT

GND Ground NC No Connection

Operating Voltage Input Voltage Output Pin

Functional Block Diagram

Introduction

The AP78LXX series is a three terminal device with fixed output voltages from 5V,8V and 12V. T he AP78LXX fixed voltage regulator series has built-in thermal overload protection which prevents the device from being damaged due to excessive junction temperature. The regulator also contains internal short-circuit protection which limits the maximum output current, an d safe-area protection for the pass transistor which reduces the short-circuit current as the voltage across the pass transistor is increased.

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AP78L05/08/12

Absolute Maximum Ratings (T

Symbol Parameter Rating Unit

ESD HBM Human Body Model ESD Protection 3 KV

ESD MM Machine Model ESD Protection 250 V

VCC

V

OUT

TST TOP TMJ

Recommended Operating Conditions (T

Symbol Parameter Min Max Unit

VIN

I

OUT

TA

AP78L05/08/12

Document number: DS31054 Rev. 10 - 2

Supply Voltage

Output Voltage to Ground

Storage Temperature Operating Junction Temperature Maximum Junction Temperature

Input Voltage

Output Current 0 100 mA Operating Ambient Temperature -20 +85

AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

= 25°C)

A

30 V AP78L05 5 AP78L08 8 AP78L12 12

-65 to +150 °C

-20 to +125 °C 150 °C

= 25°C)

A

AP78L05 7 20 AP78L08 10.5 23 AP78L12 14.5 27

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V

o

C

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AP78L05/08/12

AP78Lxx Electrical Characteristics (All Output Voltage Versions)

Limits in standard typeface are for T Unless otherwise specified: I

O

AP78L05

Unless otherwise specified, VIN = 10V

Symbol Parameter Conditions Min Typ. Max Unit

VO

ΔVO

IQ

ΔIQ

VN

ΔVIN/ΔV

IPK

ΔVO/ΔT V

IN(MIN)

θ

JA

θ

JC

Notes: 4. Recommend 0.01µF minimum load capacitance at output to suppress high frequency noise.

5. Test conditions for TO92: No heat sink, no air flow.

6. Test conditions for SO-8: Device mounted on 2oz copper, minimum recommended pad layout, FR-4 PCB.

7. Test conditions for SOT89: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

Output Voltage

Line Regulation

Load Regulation

Quiescent Current 3 5

Quiescent Current Change

Output Noise Voltage

Ripple Rejection

OUT

Peak Output Current 140 mA Average Output Voltage Tempco Minimum Value of Input Voltage

Required to Maintain Line Regulation

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to Case

AP78L05/08/12

Document number: DS31054 Rev. 10 - 2

= 25℃, Bold typeface applies over T

A

= 40mA, C

= 0.33µF, C

I

AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

= -20°C to +125°C for TO92, SOT89 and SO-8 packages.

J

= 0.1µF.

O

4.8 5 5.2 7V ≤ V

1mA ≤ I 1mA ≤ IO ≤ 70mA 4.75 7V ≤ V 8V ≤ V 1mA ≤ IO ≤ 100mA 1mA ≤ IO ≤ 40mA

8V ≤ V 1mA ≤ IO ≤ 40mA f = 10Hz to 100kHz

(Note 4) f = 120Hz

8V ≤ V

IO = 5mA

6.7 7 V TO92 (Note 5)

SO-8 (Note 6) 153 SOT89 (Note 7) 145 TO92 (Note 5) SO-8 (Note 6) 18 SOT89 (Note 7) 25

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≤ 20V

IN

O

≤ 20V

IN

≤ 20V

IN

≤ 20V

IN

≤ 16V

IN

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≤ 40mA

4.75

5.25

18 75 10 54 20 60 5 30

1.0

0.1

- 40 µV

47 62 dB

-0.65 mV/

176

33

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V

mV

mA

o

C/W

oC

AP78L05/08/12

AP78Lxx Electrical Characteristics (cont.)

AP78L08

Unless otherwise specified, VIN = 14V

Symbol Parameter Conditions Min Typ. Max Unit

VO

ΔVO

IQ

ΔIQ

VN

ΔVIN/ΔV

IPK

ΔVO/ΔT V

IN(MIN)

θ

JA

θ

JC

Notes: 4. Recommend 0.01µF minimum load capacitance at output to suppress high frequency noise.

5. Test conditions for TO92: No heat sink, no air flow.

6. Test conditions for SO-8: Device mounted on 2oz copper, minimum recommended pad layout, FR-4 PCB.

7. Test conditions for SOT89: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

Output Voltage

Line Regulation

Load Regulation

Quiescent Current 2 5.5

Quiescent Current Change

Output Noise Voltage

Ripple Rejection

OUT

Peak Output Current 140 mA Average Output Voltage Tempco Minimum Value of Input Voltage

Required to Maintain Line Regulation

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to case

AP78LXX SERIES 3-TERMINAL POSITIVE REGULATORS

7.7 8 8.3

10.5V ≤ V 1mA ≤ I

1mA ≤ IO ≤ 70mA 7.6

10.5V ≤ V 11V ≤ V 1mA ≤ I 1mA ≤ IO ≤ 40mA

11V ≤ V 1mA ≤ IO ≤ 40mA f = 10Hz to 100kHz

(Note 4) f = 120Hz

13V ≤ V

IO = 5mA

9.7 V TO92 (Note 5)

SOT89 (Note 7) 157 TO92 (Note 5) SO-8 (Note 6) 18 SOT89 (Note 7) 33

≤ 23V

IN

≤ 40mA

O

≤ 23V

IN

≤ 23V

IN

≤ 100mA

O

≤ 23V

IN

≤ 23V

IN

7.6

42 175 36 125 18 80 10 40

- 54 µV

37 46 dB

-0.8 mV/

176

33

8.4

1.5

0.1

mV

mA

o

C/W SO-8 (Note 6) 153

o

C/W

V

oC

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