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Publication date: October 2008
AN77L035
Package Code No.
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DATA SHEET
SSIP003-P-0000S
(Exclusive use for AN77Lxx)
SFF00081BEB
1
AN77L035
Contents
Overview ……………………………………………………………………………………………………………. 3
Features …………………………………………………………………………………………………………….. 3
Applications ………………………………………………………………………………………………………… 3
Package ……………………………………………………………………………………………………………. 3
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Type …………………………………...……………………………………………………………………………. 3
Block Diagram ………………...……………………………………………………………………………………. 4
Pin Descriptions ……………………………………………………………………………………………………. 5
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Absolute Maximum Ratings ………………………………………………………………………………………. 6
Operating supply voltage range …………………………………………………………………………………. 6
Electrical Characteristics …………………………………………………………………………………………. 7
Electrical Characteristics (Reference values for design) ………………………………………………………. 8
Technical Data ……………………………………………………………………………………………………… 9
Package Dimensions ………………………………….………………………………………………………….. 10
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Usage Notes ……………………………………………………………………………………………………….. 11
SFF00081BEB
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AN77L035
AN77L035
3-pin, positive output, low dropout voltage regulator (100 mA type)
Overview
Features
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The AN77Lxx series are 3-pin, fixed positive output type monolithic voltage regulators. The AN77L035 is the 3.5 V output voltage
type in these series. They can be used widely in power supply circuits with current capacity of up to 100 mA. It is suitable for the lowvoltage equipment using batteries and consumer/industrial equipment with great fluctuation of the supply voltage.
Stabilized fixed output voltage is obtained from unstable DC input voltage with using a 10 μF output capacitor.
11 types of fixed output voltage are available; 3 V, 3.5 V, 4 V, 4.5 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V and 12 V.
y Minimum input/output voltage difference: 0.22 V typ.
y Built-in over current limit circuit
y Built-in rush current prevention circuit at input voltage rise
y Built-in overheat protection circuit
y Built-in input short-circuit protection circuit
Applications
y 3-pin positive output voltage regulator (100 mA type)
Package
y 3-pin plastic shrink single inline package (SSIP type)
Type
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y Silicon monolithic bipolar IC
SFF00081BEB
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Error Amp.
–
Over heat
protection
1
3
Common
Pl
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Output Driver
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CIN : 0.33 μF
COUT : 10 μF
R1 : 18 kΩ
R2 : 10 kΩ
Ma
Input
Voltage Reference
Starter
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AN77L035
Block Diagram
Input short-circuit
protection
SFF00081BEB
Pass Tr
Over current
limit
Rush current
prevention
R1
R2
2
Output
COUT
4
Input
Output
GND
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Pin name
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AN77L035
Pin Descriptions
Type
Description
Input voltage
Output voltage
Ground.
SFF00081BEB
5
AN77L035
Absolute Maximum Ratings
A
No.
Parameter
Symbol
Rating
Unit
Note
Input voltage
VIN
30
V
*1
2
Supply current
ICC
200
mA
⎯
3
Power dissipation
PD
342
mW
*2
4
Operating ambient temperature
Topr
−30 to +85
°C
*3
5
Storage temperature
Tstg
−55 to +150
°C
*3
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Note) *1: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
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*2: The power dissipation shown is the value at Ta = 85°C.
When using this IC, refer to the y PD-Ta diagram in the Technical Data and use under the condition not exceeding the allowable value.
When Tj exceeds 150°C, the internal circuit cuts off the output.
*3: Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C.
Operating supply voltage range
Parameter
Supply voltage range
Symbol
Range
Unit
Note
VCC
(VOUT + 0.41 V) to 14.14
V
⎯
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Note) The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
SFF00081BEB
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AN77L035
Electrical Characteristics
Note) Unless otherwise specified, Ta = 25°C±2°C, VIN = 4.5 V, IOUT = 50 mA, CIN = 0.33 μF and COUT = 10 μF.
B
No.
Parameter
Symbol
Conditions
—
Limits
Unit
Note
3.64
V
—
Min
Typ
Max
3.36
3.5
Output voltage
VOUT
2
Line regulation
REGIN
VIN = 4.14 V to 14.14 V
—
3.0
60
mV
—
3
Load regulation
REGL
IOUT = 0 mA to 100 mA
—
9.0
60
mV
—
4
Minimum input/output
voltage difference 1
VDIF(min)1 VIN = 3.15 V, IOUT = 50 mA
—
0.12
0.25
V
—
5
Minimum input/output
voltage difference 2
VDIF(min)2 VIN = 3.15 V, IOUT = 100 mA
—
0.22
0.41
V
—
6
Bias current before regulation start
Irush
VIN = 3.15 V, IOUT = 0 mA
—
1.5
5
mA
—
7
Bias current
IBias
IOUT = 0 mA
—
0.9
1.5
mA
—
8
Bias current fluctuation to load
ΔIBias(L)
IOUT = 0 mA to 100 mA
—
3.0
5
mA
—
9
Ripple rejection ratio
RR
VIN = 4.14 V to 6.14 V,
f = 120 Hz
59
69
—
dB
—
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1
SFF00081BEB
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AN77L035
Electrical Characteristics (Reference values for design)
Note) Unless otherwise specified, Ta = 25°C±2°C, CIN = 0.33 μF and COUT = 10 μF.
The characteristics listed below are reference values for design of the IC and are not guaranteed by inspection.
If a problem does occur related to these characteristics, Panasonic will respond in good faith to user concerns.
B
No.
Symbol
Output noise voltage
Vno
Conditions
Reference values
3
Output voltage
temperature coefficient
Tj(TH)
ΔVOUT
———
Ta
—
μV
—
—
°C
—
mV/°C
—
Max
VIN = 4.5 V, IOUT = 50 mA
f = 10 Hz to 100 kHz
—
75
VIN = 4.5 V
—
150
VIN = 4.5 V
Tj = −30°C to 125°C
—
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Over heat protection
temperature start
Note
Typ
0.23
—
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Unit
Min
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1
Parameter
SFF00081BEB
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AN77L035
Technical Data
y PD — Ta diagram
SFF00081BEB
9
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AN77L035
Package Dimensions (Unit: mm)
y SSIP003-P-0000S (Exclusive use for AN77Lxx)
SFF00081BEB
10
AN77L035
Usage Notes
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1. Input short-circuit protection circuit
For the conventional Panasonic 3-pin regulators (such as of the AN80xx series), when DC input pin (pin 1) is short-circuited
with GND pin (pin 3) in the normal operation condition, the potential of output pin (pin 2) becomes higher than that of DC input pin
and the electric charges which is charged in output capacitor COUT flows in the input side, having resulted in the breakage of
elements.
In the above case, the common silicon diode is connected as shown in the following figure (the dotted line).
However, for the AN77Lxx/AN77LxxM series, since the protection circuit, which protects the elements from the discharging
current, is incorporated in the internal circuit, the protection diode is not required.
1
3
Input
VIN
Common
CIN
Figure 1. Protection diode
2
0.33 μF
Output
COUT
10 μF
on
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Not required
2. Short-circuit between the output pin and the GND pin
Because there is no in-built protection circuit in the AN77Lxx/AN77LxxM series, they have the drooping characteristics as
shown in "Figure 3". When your use under a high voltage happens to cause any short-circuit between the output pin (pin 2) and the
GND pin (pin 3), the IC is likely to be broken.
Pl
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Equivalent series resistance (Ω)
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3. Capacitor for external compensation
In order to secure the stability, the capacitor of 10 μF is required in the output side and it should be added as near to output pin
(pin 2) and GND pin (pin 3) as possible. When it is used under low temperature, oscillation may occur due to the decrease of the
aluminum electrolytic capacitor's capacitance and an increase of ESR. For the AN77Lxx series, it is recommended that the tantalum
capacitor or aluminum electrolytic capacitor whose equivalent serial resistance with temperature characteristics within the
recommended range specified in “Figure 2" should be used.
40
VOUT
30
20
10
0
Recommended range
20
40
60
80
Output current IOUT (mA)
0
100
200
IOUT (mA)
Figure 3. Over current limit control
Figure 2. ESR recommended range
SFF00081BEB
11
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
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(3) The products described in this book are intended to be used for standard applications or general electronic equipment (such as office
equipment, communications equipment, measuring instruments and household appliances).
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support
systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body.
– Any applications other than the standard applications intended.
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(4) The products and product specifications described in this book are subject to change without notice for modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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