LAB
1
2
SEME
IP1R07A
IP3R07A
IP1R07A
IP3R07A
1 2 3 4 5
4
3
5
3 AMP
LOW DROPOUT
POSITIVE ADJUSTABLE
VOLTAGE REGULATOR
FEATURES
• 1% OUTPUT VOLTAGE TOLERANCE
(–A VERSIONS)
• 0.3% LOAD REGULATION
• 0.01% / V LINE REGULATION
• 0.8V DROPOUT VOLTAGE AT 3A
• COMPLETE SERIES OF PROTECTIONS:
Pin 1 – V
P
Pin 2 – V
C
Pin 3 – N/C
Pin 4 – ADJ.
Case – V
O
Pin 1 – V
C
Pin 2 – N/C
Pin 3 – V
O
Pin 4 – V
P
Pin 5 – ADJ.
K Package – TO–3
V Package – TO–218
1 2 3 4 5
1 2 3
• CURRENT LIMITING
• THERMAL SHUTDOWN
• SOA CONTROL
Pin 1 – V
C
Pin 2 – N/C
Pin 3 – V
O
Pin 4 – V
P
Case – ADJ.
Pin 1 – V
C
Pin 2 – V
P
Pin 3 – ADJ.
Case – V
O
Description
The IP3R07A series of low dropout adjustable voltage
regulators are capable of supplying 3A of output current
with an input-to-output voltage of just 0.8V. In applications
where high efficiency is necessary it is now possible to
obtain a low cost, single chip solution. These regulators
are exceptionally easy to use, requiring only two external
resistors to set the output voltage.
The IP3R07A exhibits an initial ±1% output voltage
tolerance, and over all operating conditions the reference
voltage is guaranteed not to vary more than ±2%. These
devices include internal current limiting, thermal overload
protection, and power device safe operating area
compensation.
T Package – TO–220
G Package – TO–257
ABSOLUTE MAXIMUM RATINGS
(T
case
= 25°C unless otherwise stated)
Control Input to Output Voltage
Power Input to Output Voltage
P
D
T
J
T
STG
T
L
Power Dissipation
Operating Junction Temperature Range
Storage Temperature
Lead Temperature (Soldering, 10 sec.)
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
35V
15V
Internally limited
See Order Information Table
–65 to +150°C
+300°C
Prelim. 4/96
Semelab plc.
LAB
BLOCK DIAGRAM
BIAS
CONTROL
INPUT
THERMAL
SHUTDOWN
VOLTAGE
REFERENCE
A
V
CURRENT
LIMIT
POWER
INPUT
INTERNAL
PASS
TRANSISTOR
CURRENT LIMIT
SENSE RESISTOR
OUTPUT
ADJUST
SEME
IP1R07A
IP3R07A
IP1R07A
IP3R07A
TYPICAL APPLICATION
IP3R07A
6V
3A
10V
50mA
1µF
1µF
10µF *
R2
360Ω
V
P
V
OUT
V
C
5V
3A
R1
121Ω
1µF **
V
O
ADJ
GND
* Improves Ripple Rejection.
** Improves Transient Response.
R2
NOTE: V
O
= 1.25V 1 + R1
Order Information
Part
Number
IP1R07A
IP1R07
IP3R07A
IP3R07
K–Pack
(TO–3)
G–Pack
(TO–257)
T–Pack
(TO–220)
V–Pack
(TO–218)
Temp.
Range
-55 to +150°C
”
0 to 125°C
”
Note:
To order, add the package identifier
to the part number.
eg.
IP1R07AK
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 4/96
LAB
Parameter
Test Conditions
2
I
O
= 10mA
I
O
= 10mA to 3A
V
REF
Reference Voltage
V
C
– V
O
= 3V to 35V
V
P
– V
O
= 1.5V to 7V
P
≤
20W
∆V
OUT
∆I
OUT
∆V
OUT
∆I
OUT
Line Regulation
1
Load Regulation
1
Thermal Regulation
Ripple Rejection
Dropout Voltage
(Power Input)
I
ADJ
∆I
ADJ
Adjust Pin Current
Adjust Pin Current
Change
I
MIN
Minimum Load
Current
I
CL
Current Limit
T
J
= Over Temp. Range
1
0.005
0.020
0.10
T
J
= Over Temp. Range
1
t
p
= 20ms
V
O
= 10V
f = 120Hz
∆V
O
= 50mV
T
J
= Over Temp. Range
1
I
O
= 10mA to 3A
V
P
– V
O
= 1.5V to 7V
V
C
– V
O
= 3V to 35V
T
J
= Over Temp. Range
1
V
C
– V
O
= 35V
T
J
= Over Temp. Range
1
V
P
– V
O
≤
7V
T
J
= Over Temp. Range
1
K Package
R
θJC
Thermal Resistance
Junction to Case
V Package
T Package
G Package
Power Transistor
Control Circuitry
Power Transistor
Control Circuitry
3
3.5
4.5
1.2
0.5
2.3
0.7
5
3
3.5
4.5
1.2
0.5
2.3
0.7
0.2
5
0.2
C
ADJ
= 0
C
ADJ
= 10µF
T
J
= Over Temp. Range
1
66
0.30
0.002
65
86
0.8
50
1.0
100
66
0.010
0.050
0.30
1.0
0.010
V
C
– V
O
= 3V to 35V
T
J
= Over Temp. Range
1
I
O
= 10mA to 3A
1.225
1.250
1.270
1.20
SEME
IP1R07A
IP3R07A
IP1R07A
IP3R07A
IP1R07A
IP3R07A
Min. Typ. Max.
1.238
1.250
1.262
IP1R07
IP3R07
Min. Typ. Max. Units
V
1.25
1.30
V
0.005
0.020
0.10
0.30
0.002
65
86
0.8
50
0.030
0.070
0.50
1.5
0.030
%/V
%
%/W
dB
dB
1.0
100
V
µA
5
µA
10
mA
A
°C/W
Notes
1) Applies over full temperature range :–
T
J
= –55 to +150°C for IP1R07A / IP1R07
T
J
=
0 to +125°C for IP3R07A / IP3R07
All other specifications apply at T
J
= 25°C unless otherwise stated.
2) Test conditions unless otherwise stated :–
V
C
- V
O
= 5V , V
P
- V
O
= 3V , I
OUT
= 3A.
Although Power Dissipation is internally limited, these specifications apply for Power Dissipation up to 50W.
3) Load and Line regulation are electrically independent and are measured using pulse techniques at low duty cycle in order to
maintain constant junction temperature. To determine the effects on the output voltage due to device heating, refer to thermal
regulation specification.
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 4/96
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