INTERPION IP1525

IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
DESCRIPTION
The IP1525 is a dual output voltage LDO regulator
which can provide up to 500mA of output current.
The IP1525 consists of 2-adjustable regulators.
14SOPH-8L
FEATURES
ORDERING INFORMATION
- 2-Adjustable LDO regulators with internal NPN TR.
- Built-in TSD circuit.
- Built-in current limit circuit.
- Built-in over voltage protection circuit.
- Output trimmed to +/-3% Tolerance
Device
Package
Operating Temp
SAC1525
14SOPH-8L
-35 OC ~ +85 OC
BLOCK DIAGRAM
VIN
OCL
1
OVP
ON/OFF
2
On/off
control SW
Shutdown
TSD
PGND
N/C
3
ADJ1
4
VOUT1
5
VOUT2
6
ADJ2
7
December. 2002 (Rev.0)
Vref
PGND
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
PIN CONNECTIONS
PGND
PGND
IP1525
1
2
3
VIN
ON/OFF
N/C
4
5
6
7
ADJ1 VOUT1 VOUT2 ADJ2
PIN DESCRIPTIONS
NO
SYMBOL
I/O
1
VIN
I
Input Supply Voltage
2
ON/OFF
I
ON/OFF control
3
N/C
-
No Connection
4
ADJ1
I
Regulator 1 Adjustable Pin
5
VOUT1
O
Regulator 1 Output (Adjustable)
6
VOUT2
O
Regulator 2 Output (Adjustable)
7
ADJ2
I
Regulator 2 Adjustable Pin
8
PGND
-
Power Ground
December. 2002 (Rev.0)
DESCRIPTION
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
ABSOLUTE MAXIMUM RATINGS(TA=25OC)
CHARACTERISTICS
SYMBOL
VALUE
UNIT
Maximum supply voltage
Vccmax
10
V
Input voltage
Vinmax
10
V
Power dissipation
Pd
3.0*
W
Operating temperature
Topr
-35 ~ +85
O
Storage temperature
Tstr
-55 ~ +150
O
C
C
Note>
1. When mounted on 100mm X 100mm X 1mm PCB (Phenolic resin material).
2. Power dissipation reduces 24mW/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
Input voltage
VIN
4.5 ~ 6.0
V
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
ELECTRICAL CHARACTERISTICS
( Vin= 5V, Co=10uF, Ta = 25O C, unless otherwise specified.)
Characteristics
Symbol
Quiescent current
Icc
Condition
Min.
Typ.
Max.
Units
-
7
12
mA
6.5
-
-
V
1.212
1.25
1.288
V
Vref
-
Vin1.5V
V
Vcc=5V, No-Load
OVP Dectecting Voltage
Vovp
Vcc=Variable
Reference voltage
Vref
-
LDO REGULATOR 1 (ADJUSTABLE TYPE)
Output Voltage
Vout1
Line Regulation
dVline1
Vin=4.5~6V, Io=10mA
-
0.01
0.2
%
Load Regulation
dVload1
Ta=25 OC
Vin=5V, 10mA < Io < 400mA
-
0.4
0.8
%
Dropout voltage
Vdrop1
Io=400mA
-
1.1
1.3
V
Ripple rejection
RR1
F=120Hz, Co=10uF Tantalum
Vin-Vout=2V, Io=200mA
60
70
-
dB
Ilimit1
Vin-Vout=3.0V
500
-
-
mA
Adjust pin current
Iadj 1
-
-
0.1
-
uA
Minimum load current
Ilmin1
-
10
-
-
mA
Temperature stability
Temp1
-
-
0.5
-
%
Vref
-
Vin1.5V
V
Current limit
*Note
Io=10mA
LDO REGULATOR 2 (ADJUSTABLE TYPE)
Output Voltage
Vout2
Line Regulation
dVline2
Vin=4.5~6V, Io=10mA
-
0.01
0.2
%
Load Regulation
dVload2
Ta=25 OC
Vin=5V, 10mA < Io < 400mA
-
0.4
0.8
%
Dropout voltage
Vdrop2
Io=400mA
-
1.1
1.3
V
Ripple rejection
RR2
F=120Hz, Co=10uF Tantalum
Vin-Vout=2V, Io=200mA
60
70
-
dB
Ilimit2
Vin-Vout=3.0V
500
-
-
mA
Adjust pin current
Iadj 2
-
-
0.1
-
uA
Minimum load current
Ilmin2
-
10
-
-
mA
Temperature stability
Temp2
-
-
0.5
-
%
Current limit
*Note
Io=10mA
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 : 500 mA, Iout2 : 500 mA )
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
APPLICATION SUMMARY
- ON / OFF
When you want to control output of the IP1525, use pin #2 as follows
Main
bias
Q1
Pin#2
Vth
December. 2002 (Rev.0)
As shown in figure
Pin#2 is positive input of the comparator,
and the other Input is threshold voltage.
If the voltage of the pin#2 rises above threshold voltage,
then TR Q1 will be saturated and the main bias current
will be shut down.
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
TYPICAL APPLICATION CIRCUIT
PGND
PGND
IP1525
VIN
ON/OFF
N/C
1
2
3
ADJ1 VOUT1 VOUT2 ADJ2
4
5
6
Radj1
Radj2
Vinput
7
Radj3
Radj4
10uF
10uF
ON/OFF
Vout1
Vout2
*CALCULATION OF OUTPUT VOLTAGE
VOUT1 = VREF ( 1 + (Radj1 / Radj2) ) =1.25V ( 1 + (Radj1 / Radj2) )
VOUT2 = VREF ( 1 + (Radj3 / Radj4) ) =1.25V ( 1 + (Radj3 / Radj4) )
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
INTERNAL CIRCUIT
Pin no
Pin name
Internal circuit
2
2
ON/OFF
4,5,6,7
Regulator
Output1,2
Regulator
Adjustable
pin
December. 2002 (Rev.0)
Vref
4
7
5
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
ELECTRICAL CHARACTERISTICS CURVES
QUIESCENT CURRENT
10
Icc (mA)
8
Vo1=Vo2=1.25V
Ro1=Ro2=1K
6
4
2
0
0
2
4
6
8
10
Vcc (V)
VREF TEMPERTURE STABILITY
1.270
1.265
VREF (V)
1.260
1.255
1.250
1.245
1.240
1.235
1.230
-50
0
50
100
150
O
TEMP ( C)
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
ELECTRICAL CHARACTERISTICS CURVES (Continued)
o
VOUT1,2 Load Regulation (Tj=25 C)
1.35
Output Voltage (V)
1.30
Vo1=1.25V,Vo2=1.25V
1.25
1.20
1.15
1.10
0
200
400
600
800
1000
Output Current (mA)
VOUT1,2 Load Transient Response
Output Voltage Deviation (mV)
200
Vout1=Vout2=1.25V
100
Io=50mA
0
Io=400mA
-100
-200
0
20
40
60
80
Time (usec)
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO REGULATOR
ELECTRICAL CHARACTERISTICS CURVES (Continued)
Dropout Voltage
Dropout Voltage (V)
1.4
1.2
1.0
0.8
0.6
0
200
400
600
800
Output Current (mA)
December. 2002 (Rev.0)
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IP1525
DUAL OUTPUT VOLTAGE LDO 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)
(0.343MAX)
2.946
8.70MAX
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)
December. 2002 (Rev.0)
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