Voltage Regulators
AN77xxSP Series
3-pin, positive output, low dropout voltage regulator (1.2 A type)
I
Overview
The AN77xxSP series is stabilized constant-voltage
power supplies with small difference between I/O volt-
ages (0.5 V typ.). It is suitable for low-voltage, battery-
driven equipment, and home appliances and industrial
equipment with great fluctuation of the supply voltage.
The output voltage ranges:
3.3 V, 3.5 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, 12 V,
and 15 V
AN77xxSP series
6.50±0.10
5.30±0.10
4.35±0.20
3.00±0.20
1.80±0.30
2.50±0.20
Unit: mm
1.00±0.20
5.50±0.20
0.20 max.
7.30±0.10
9.80±0.10
I
Features
•
Minimum I/O voltage difference: 0.5 V typ.
•
On-chip overcurrent limiter
•
On-chip thermal protection circuit
•
On-chip inrush current protection circuit at the time of
input voltage start-up
•
On-chip input short-circuit protection circuit
(When the input pin is short-circuited to the ground, the
circuit between pins 1 and 3 is shut down to prevent
current flow.)
2
1
2.30
4.60±0.10
2.30±0.10
3
0.75±0.10
0.80 max.
0.55±0.15
0.10±0.05
SP-3SU
Note) The package of this product will be changed
to lead-free type (SP-3SUA). See the new pack-
age dimensions section later of this datasheet.
I
Applications
•
Power supply equipment
I
Block Diagram
Input short-circuit
protection
Output stage
Voltage reference
Overcurrent
limiter
Output driver
Inrush current
protection
R1
Thermal
protection
Error amplifier
R2
Starter
V
REF
1
Publication date: November 2001
2
SFF00003CEB
3
1
1.00±0.30
AN77xxSP Series
I
Pin Descriptions
Pin No.
1
2
3
Description
Input pin (In)
Ground pin (COM)
Output pin (Out)
I
Absolute Maximum Ratings at T
a
=
25°C
Parameter
Supply voltage
*2
Supply current
*3
Power dissipation
*4
Operating ambient temperature
*1
Storage temperature
*1
Symbol
V
IN
I
IN
P
D
T
opr
T
stg
Rating
30
2.4
5.0
−30
to
+85
−55
to
+150
Unit
V
A
W
°C
°C
Note) *1: Expect for the operating ambient temperature and storage temperature, all ratings are for T
a
=
25°C.
*2: At the application of V
IN
=
30 V, the overvoltage protection may be operated by the ASO protection circuit, leading to the
output shut down.
*3: The current value does not exceed this criterion because of the on-chip current limiter.
*4: The internal circuit shuts off the output when T
j
≥
150°C (designed value). The relationship between the IC power
dissipation and ambient temperature shall conform to the derating curve (I Main Characteristics P
D
T
a
).
I
Recommended Operating Conditions at I
OUT
=
500 mA, T
a
=
25°C
Part No.
AN77033SP
AN77035SP
AN7705SP
AN7706SP
AN7707SP
AN7708SP
AN7709SP
AN7710SP
AN7712SP
AN7715SP
Output voltage
3.3
3.5
5
6
7
8
9
10
12
15
Operating supply voltage range (V
IN
)
4.3 to 14
4.5 to 14
6 to 16
7 to 17
8 to 18
9 to 19
10 to 20
11 to 21
13 to 23
16.5 to 26.5
Unit
V
V
V
V
V
V
V
V
V
V
2
SFF00003CEB
AN77xxSP Series
I
Electrical Characteristics at T
a
=
25°C
•
AN77033SP (3.3 V type)
Parameter
Output voltage
Line regulation
Load regulation
Input dependency of bias current
Load dependency of bias current
Bias current at no load
Bias current
before the regulation starts
Symbol
V
OUT
Conditions
V
IN
=
4.3 V, I
OUT
=
500 mA,
T
j
=
25°C
Min
3.20
1.2
53
Typ
3.30
3
15
1
10
2.6
3
0.4
0.5
1.8
74
Max
3.40
35
70
10
50
5.0
5
0.6
1.0
2.4
Unit
V
mV
mV
mA
mA
mA
mA
V
V
A
dB
REG
IN
V
IN
=
4.3 V to 14.3 V,
I
OUT
=
500 mA, T
j
=
25°C
REG
LOA
V
IN
=
4.3 V,
I
OUT
=
0 mA to 1 200 mA, T
j
=
25°C
∆I
Bias(IN)
V
IN
=
4.3 V to 14.3 V,
I
OUT
=
500 mA, T
j
=
25°C
∆I
Bias(LOA)
V
IN
=
4.3 V,
I
OUT
=
0 mA to 1 200 mA, T
j
=
25°C
I
Bias
I
rush
V
IN
=
4.3 V, I
OUT
=
0 mA
V
IN
=
3.0 V, I
OUT
=
0 mA
Minimum I/O voltage difference 1 V
DIF(min)1
V
IN
=
3.7 V, I
OUT
=
500 mA,
T
j
=
25°C
Minimum I/O voltage difference 2 V
DIF(min)2
V
IN
=
3.7 V, I
OUT
=
1 200 mA,
T
j
=
25°C
Peak output current 1
*
Ripple rejection ratio
I
O(Peak)1
V
IN
=
4.3 V, T
j
=
25
°C
RR
V
IN
=
4.3 V to 8.0 V,
I
OUT
=
100 mA, f
=
120 Hz
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Peak output current 2
*
Peak output current 3
*
Output short-circuit current
Thermal protection operating
temperature
Output voltage temperature
coefficient
Symbol
Conditions
Min
Typ
1.5
1.0
10
150
−40
Max
Unit
A
A
mA
°C
ppm/°C
I
O(Peak)2
V
IN
=
13.3 V, T
j
=
25°C
I
O(Peak)3
V
IN
=
18.3 V, T
j
=
25°C
I
O(Short)
V
IN
=
30 V, T
j
=
25°C
The load is shorted.
T
j(TH)
a
V
IN
=
4.3 V
V
IN
=
4.3 V, T
j
=
25°C to 125°C
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
SFF00003CEB
3
AN77xxSP Series
I
Electrical Characteristics at T
a
=
25°C (continued)
•
AN77035SP (3.5 V type)
Parameter
Output voltage
Line regulation
Load regulation
Input dependency of bias current
Load dependency of bias current
Bias current at no load
Bias current
before the regulation starts
Symbol
V
OUT
Conditions
V
IN
=
4.5 V, I
OUT
=
500 mA,
T
j
=
25°C
Min
3.39
1.2
53
Typ
3.50
3
15
1
10
2.6
3
0.4
0.5
1.8
74
Max
3.61
35
70
10
50
5.0
5
0.6
1.0
2.4
Unit
V
mV
mV
mA
mA
mA
mA
V
V
A
dB
REG
IN
V
IN
=
4.5 V to 14.5 V,
I
OUT
=
500 mA, T
j
=
25°C
REG
LOA
V
IN
=
4.5 V,
I
OUT
=
0 mA to 1 200 mA, T
j
=
25°C
∆I
Bias(IN)
V
IN
=
4.5 V to 14.5 V,
I
OUT
=
500 mA, T
j
=
25°C
∆I
Bias(LOA)
V
IN
=
4.5 V,
I
OUT
=
0 mA to 1 200 mA, T
j
=
25°C
I
Bias
I
rush
V
IN
=
4.5 V, I
OUT
=
0 mA
V
IN
=
3.2 V, I
OUT
=
0 mA
Minimum I/O voltage difference 1 V
DIF(min)1
V
IN
=
3.7 V, I
OUT
=
500 mA,
T
j
=
25°C
Minimum I/O voltage difference 2 V
DIF(min)2
V
IN
=
3.7 V, I
OUT
=
1 200 mA,
T
j
=
25°C
Peak output current 1
*
Ripple rejection ratio
I
O(Peak)1
V
IN
=
4.5 V, T
j
=
25°C
RR
V
IN
=
4.5 V to 8.0 V,
I
OUT
=
100 mA, f
=
120 Hz
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Peak output current 2
*
Peak output current 3
*
Output short-circuit current
Thermal protection operating
temperature
Output voltage temperature
coefficient
Symbol
Conditions
Min
Typ
1.5
1.0
10
150
−40
Max
Unit
A
A
mA
°C
ppm/°C
I
O(Peak)2
V
IN
=
13.5 V, T
j
=
25°C
I
O(Peak)3
V
IN
=
18.5 V, T
j
=
25°C
I
O(Short)
V
IN
=
30 V, T
j
=
25°C
The load is shorted.
T
j(TH)
a
V
IN
=
4.5 V
V
IN
=
4.5 V, T
j
=
25°C to 125°C
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
4
SFF00003CEB
AN77xxSP Series
I
Electrical Characteristics at T
a
=
25°C (continued)
•
AN7705SP (5 V type)
Parameter
Output voltage
Line regulation
Load regulation
Input dependency of bias current
Load dependency of bias current
Bias current at no load
Bias current
before the regulation starts
Symbol
V
OUT
Conditions
V
IN
=
6 V, I
OUT
=
500 mA,
T
j
=
25°C
Min
4.85
1.2
50
Typ
5.00
5
25
1
10
2.6
3
0.4
0.5
1.8
70
Max
5.15
50
100
10
50
5
5
0.6
1.0
2.4
Unit
V
mV
mV
mA
mA
mA
mA
V
V
A
dB
REG
IN
V
IN
=
6 V to 16 V, I
OUT
=
500 mA,
T
j
=
25°C
REG
LOA
V
IN
=
6 V, I
OUT
=
0 mA to 1 200 mA,
T
j
=
25°C
∆I
Bias(IN)
V
IN
=
6 V to 16 V, I
OUT
=
500 mA,
T
j
=
25°C
∆I
Bias(LOA)
V
IN
=
6 V, I
OUT
=
0 mA to 1 200 mA,
T
j
=
25°C
I
Bias
I
rush
V
IN
=
6 V, I
OUT
=
0 mA
V
IN
=
4.5 V, I
OUT
=
0 mA
Minimum I/O voltage difference 1 V
DIF(min)1
V
IN
=
4.5 V, I
OUT
=
500 mA,
T
j
=
25°C
Minimum I/O voltage difference 2 V
DIF(min)2
V
IN
=
4.5 V, I
OUT
=
1 200 mA,
T
j
=
25°C
Peak output current 1
*
Ripple rejection ratio
I
O(Peak)1
V
IN
=
6 V, T
j
=
25°C
RR
V
IN
=
6 V to 8 V, I
OUT
=
100 mA,
f
=
120 Hz
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Peak output current 2
*
Peak output current 3
*
Output short-circuit current
Thermal protection operating
temperature
Output voltage temperature
coefficient
Symbol
Conditions
Min
Typ
1.5
1.0
10
150
−40
Max
Unit
A
A
mA
°C
ppm/°C
I
O(Peak)2
V
IN
=
15 V, T
j
=
25°C
I
O(Peak)3
V
IN
=
20 V, T
j
=
25°C
I
O(Short)
V
IN
=
30 V, T
j
=
25°C
The load is shorted.
T
j(TH)
a
V
IN
=
6 V
V
IN
=
6 V, T
j
=
25°C to 125°C
Note) * : This current exceeds P
D(max)
because it is a parameter during abnormal (overcurrent) operation. However, normally,
it shall conform to the derating curve (
I
Main Characteristics P
D
T
a
).
SFF00003CEB
5
Microchip MCU
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