IRU1260
2
Rev. 1.9
07/03/01
PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS
Vctrl Input Voltage 3.0 V
Reference Voltage Vref Io=10mA, Tj=25°C 1.188 1.200 1.212 V
Io=10mA 1.176 1.200 1.224
Line Regulation Io=10mA, Vout+1.3V<Vin=Vctrl<7V 0.2 %
Load Regulation (Note 1) 10mA<Io<IFL 0.4 %
Dropout Voltage (Output #2) Io=4A, Vctrl=4.75V, Vin=3.3V 1.0 V
(Note 2) Io=3A, Vctrl=4.75V, Vin=3.3V 0.7
Io=2A, Vctrl=4.75V, Vin=3.3V 0.35 0.5
Dropout Voltage (Output #1) Io=1A, Vctrl=4.75V, Vin=3.3V 0.4 0.6 V
(Note 2) Io=1A, Vctrl=Vin=4.75V 1.3
Current Limit (Output #2) ICL2 ∆Vo=100mV 6.1 A
Current Limit (Output #1) ICL1 ∆Vo=100mV 1.1 A
Thermal Regulation 30ms pulse, Io=IFL 0.01 0.02 %/W
Ripple Rejection f=120Hz, Co=25µF Tantalum,
Io=0.5 × IFL 70 dB
Feedback Pin Input Current IFB Io=10mA 0.02 µA
Temperature Stability Io=10mA 0.5 %
Long Term Stability Ta=125°C, 1000Hrs 0.3 1 %
RMS Output Noise Ta=25°C, 10Hz<f<10KHz 0.003 %Vo
Minimum Load Current (Note 3) 5 mA
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Vin) .................................................... 7V
Power Dissipation ..................................................... Internally Limited
Storage Temperature Range ...................................... -65°C To 150°C
Operating Junction Temperature Range ..................... 0°C To 150°C
PACKAGE INFORMATION
7-PIN PLASTIC TO-220 (T) 7-PIN PLASTIC TO-263 (M) 7-PIN ULTRA THIN-PAK (P)
θJT=2.7$C/W, θJA=60$C/W θJA=30$C/W for 1"sq pad θJA=30$C/W for 1"sq pad
ELECTRICAL SPECIFICATIONS
Vctrl
Vfb1
Vfb2
Gnd
Vout2
Vin
Vout1
FRONT VIEW
1
2
3
4
5
6
7
Vctrl
Vfb1
Vfb2
Gnd
Vout2
Vin
Vout1
FRONT VIEW
1
2
3
4
5
6
7
Vctrl
Vfb1
Vfb2
Gnd
Vout2
Vin
Vout1
M7
FRONT VIEW
1
2
3
4
5
6
7
Unless otherwise specified, these specifications apply over Cin=1µF, Cout=10µF and Tj=0 to 150°C. Typical
values refer to Tj=25°C. IFL=6A for output #1 and IFL=1A for output #2. Vfb=Vo for both outputs. Vctrl=Vin=3.3V.
Note 3: Minimum load current is defined as the mini-
mum current required at the output in order for the out-
put voltage to maintain regulation. Typically the resistor
divider values are selected such that this current is au-
tomatically maintained.
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential voltage between Vin and Vout required to main-
tain regulation at Vout. It is measured when the output
voltage drops 1% below its nominal value.
