INTERPION IP1521

IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
DESCRIPTION
The IP1521 is a dual output voltage series regulator
which can provide up to 600mA of output current.
The IP1521 consists of 1-fixed 3.3V and 1-fixed 1.8V
regulators.
14SOPH-8L
FEATURES
ORDERING INFORMATION
- 1-Fixed 3.3V Regulator with Internal NPN TR.
- 1-Fixed 1.8V Regulator with Internal NPN TR.
- Built-in TSD Circuit.
- Built-in Current Limit Circuit.
- Built-in ON/OFF Control Circuit.
- Built-in Over Voltage Protection Circuit.
- Output Trimmed to +/-3% Tolerance
Device
IP1521
Package
Operating Temp
14SOPH-8L
-35 OC ~ +85 OC
BLOCK DIAGRAM
VIN 1
VOUT1 2
PGND
N/C 3
ON/OFF 4
Vref
VOUT2 5
August. 2002 (Rev.4)
N/C
6
ON/OFF
SW
N/C
7
OCP
PGND
SHUT
DOWN
OVP
TSD
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
PIN CONNECTIONS
PGND
PGND
IP1521
1
2
3
4
VIN
VOUT1
N/C
ON/OFF VOUT2
DESCRIPTION
5
6
7
N/C
N/C
PIN DESCRIPTIONS
NO
SYMBOL
I/O
1
VIN
I
Input Supply Voltage
2
VOUT1
O
Reg +3.3V Output
3
N/C
-
No Connection
4
ON/OFF
I
ON/OFF Control
5
VOUT2
O
Reg +1.8V Output
6
N/C
-
No Connection
7
N/C
-
No Connection
8
PGND
-
Power Ground
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
ABSOLUTE MAXIMUM RATINGS(TA=25OC)
CHARACTERISTICS
SYMBOL
VALUE
UNIT
Maximum supply voltage
VINmax
10
V
ON/OFF voltage
Vonoff
10
V
Power dissipation
Pd
3.5*
W
Operating temperature
Topr
-35 ~ +85
O
Storage temperature
Tstr
-55 ~ +150
O
Maximum output current
Iomax
700
C
C
mA
Note>
1. When mounted on 100mm X 100mm X 1mm PCB (Phenolic resin material).
2. Power dissipation reduces 28mW/OC for using above Ta=25O C
3. Do not exceed Pd and SOA.
POWER DISSIPATION CURVE
Power Dissipation (W)
4
3
2
SOA
1
0
25
50
75
100
125
150
175
Ambient Temperature (°C)
RECOMMENDED OPERATING CONDITIONS
CHARACTERISTICS
SYMBOL
VALUE
UNIT
Supply voltage
Vcc
4.5 ~ 6.0
V
Input voltage
Vin
4.5 ~ 6.0
V
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
ELECTRICAL CHARACTERISTICS
( Vin= 5V, Co=10uF, Ta = 25O C, unless otherwise specified.)
Characteristics
Quiescent current
OVP Detecting
Voltage
Symbol
Icc
Vovp
Condition
Min.
Typ.
Max.
Units
-
7
11
mA
Vcc=Variable
6.5
-
-
V
Io=10mA
3.2
3.3
3.4
V
Vin=4.5~6V, Io=10mA
-
0.035
0.2
%
Vin=5V, 10mA < Io < 500mA
-
0.4
0.8
%
Io=500mA
-
1.1
1.3
V
F=120Hz, Co=10uF Tantalum
(Vin-Vout)=3V, Io=200mA
60
70
-
dB
Vin-Vout=2V
650
-
-
mA
-
0.5
-
%
-
100
-
uV
1.746
1.8
1.854
V
Vcc=5V, No-Load
3.3V REGULATOR PART
Output Voltage
Vout1
Line Regulation
dVline1
Load Regulation
dVload 1
Dropout voltage
Vdrop1
Ripple rejection
RR1
Current limit
*Note
Ilimit1
Temperature
stability
Temp1
Output noise
voltage 1
Vn1
Iout=300mA
1.8V REGULATOR PART
Io=10mA
Output Voltage
Vout2
Line Regulation
dVline2
Vin=4.5~6V, Io=10mA
-
0.035
0.2
%
Load Regulation
dVload2
Vin=5V, 10mA < Io < 300mA
-
0.4
0.8
%
Dropout voltage
Vdrop2
Io=300mA
1.7
2.1
V
Ripple rejection
RR2
Current limit
*Note
Ilimit2
Temperature
stability
Temp2
Output noise
voltage 2
Vn2
August. 2002 (Rev.4)
F=120Hz, Co=10uF Tantalum
(Vin-Vout)=3V, Io=100mA
60
70
Vin-Vout=3.5V
450
-
-
mA
-
0.5
-
%
-
100
-
uV
Iout=150mA
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dB
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
ELECTRICAL CHARACTERISTICS (Continued)
( Vin= 5V, Co=10uF, Ta = 25O C, unless otherwise specified.)
ON/OFF CONTROL PART
On voltage
Von
Vout=Enabled
-
-
0.8
V
Off voltage
Voff
Vout=Disabled
2.0
-
-
V
* Note
Don’t exceed following current limit.
( Iout1 : 650 mA, Iout2 : 450 mA )
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
APPLICATION SUMMARY
- ON / OFF
When you want to control output of the IP1521, use pin #4 as follows
Main
bias
Pin#4
IP1521
HIGH
off
LOW
on
Q1
Pin#4
As shown in figure
Pin#4 is positive input of the comparator,
and the other Input is threshold voltage.
If the voltage of the pin#4 rises above threshold voltage,
then TR Q1 will be saturated and the main bias current
will be shut down.
Vth
on/off function
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
TYPICAL APPLICATION CIRCUIT
PGND
PGND
IP1521
VIN
VOUT1
N/C
1
2
3
ON/OFF VOUT2
4
6
7
10uF
H
3.3V
August. 2002 (Rev.4)
N/C
5
10uF
Vinput
N/C
L
Von/off
1.8V
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
INTERNAL CIRCUIT
Pin no
Pin name
2
Regulator
output1
5
Regulator
Output2
August. 2002 (Rev.4)
Internal circuit
2
5
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
INTERNAL CIRCUIT (Continued)
Pin no
Pin name
Internal circuit
4
4
ON / OFF
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
VCC vs ICC
10
Icc (mA)
8
6
4
2
0
0
2
4
6
8
10
Vcc (V)
VREF TEMPERATURE STABILITY
1.82
1.81
VREF (V)
1.80
1.79
1.78
1.77
1.76
-50
0
50
100
150
O
TEMP ( C)
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
ILoad1 vs Vdrop1
Dropout Voltage1 (V)
1.4
1.2
1.0
0.8
0.6
0
100
200
300
400
500
600
700
800
600
700
800
Output Current1 (mA)
ILoad2 vs Vdrop2
2.0
Dropout Voltage (V)
1.8
1.6
1.4
1.2
1.0
0.8
0
100
200
300
400
500
Output Current (mA)
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
o
VOUT1 Load Regulation (Tj=25 C)
3.40
Output Voltage1 (V)
3.35
3.30
3.25
3.20
0
200
400
600
800
1000
1200
Output Current1 (mA)
o
VOUT2 Load Regulation (Tj=25 C)
1.82
Output Voltage (V)
1.80
1.78
1.76
1.74
1.72
0
200
400
600
800
1000
1200
Output Current (mA)
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
VOUT1 Load Transient Response
Output Voltage Deviation (mV)
200
100
Io=50mA
Io=50mA
0
-100
Io=450mA
-200
-300
0
20
40
60
80
100
Time (usec)
VOUT2 Load Transient Response
Output Voltage Deviation (mV)
200
100
Io=50mA
0
Io=350mA
-100
-200
-300
0
20
40
60
80
100
Time (usec)
August. 2002 (Rev.4)
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IP1521
DUAL OUTPUT VOLTAGE SERIES REGULATOR
PACKAGE DIMENSION
14SOPH-8L
MIN0.05
0.47
(0.061 0.004)
(0.019)
(MIN0.002)
1.55 0.10
(0.008,+0.004,-0.002)
(0.050TYP)
+0.10
-0.05
0.406
1.27TYP
8.56 0.20
( 0.347 0.008)
2.946
8.70MAX
(0.343MAX)
4.216
#1
6.00 0.30
1.80MAX
(0.008,+0.004,-0.002)
0.20
+0.10
-0.05
(0.236 0.012)
3.95 0.2
(0.156 0.008)
5.72
0.60 0.20
(0.071MAX)
0~8
(0.225)
(0.024 0.008)
August. 2002 (Rev.4)
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