PD - 94743
Ultra Low Dropout, 7.0A Adjustable Positive Linear Regulator Thru-Hole (MO-078AA)
Product Summary
Part Number
OM7580SC
OM7580SC 5962 - 0323701MYA
Output Voltage
+1.5V to +5.5V
Current
7.0A
Dropout
0.54V
Description
The OM7580SC is a 7.0A, ultra low dropout, adjustable linear regulator specifically designed for low voltage, high current applications. Housed in a hermetic package, the dropout of this device is 540mV at full load and as low a 100mV at light loads. The low dropout is achieved by an additional low current input voltage. This unit is ideally suited for military/defense, commercial aircraft, industrial control and other harsh environments where a hermetically sealed package is required.
MO-078AA
Features:
■ ■ ■ ■ ■ ■
Dropout Voltage of 540mV at Full Load Dropout Voltage of 100mV at Light Loads Fast Transient Response Adjustable Output: 1.8 to 5.5V Remote Sense Hermetic MO-078AA Package ensures High Reliability
Absolute Maximum Ratings
Parameter
Output Currrent Power Input Voltage Control Input Voltage Power Dissipation @ Tc = 25°C Thermal Resistance, Junction to Case Operating Junction Temperature Range Storage Temperature Range Lead Temperature Soldering (10second maximum)
Symbol
IO VPWR VCTRL PD RθJC TJ TSTG TL
Value
7.0 6.0 13 20 5.0 -55 to +125 -65 to +150 300
Units
A V W °C/W °C
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08/06/03
OM7580SC
Electrical Characteristics @TA = 25°C (Unless Otherwise Specified)
Parameter
Reference Voltage VADJ= 0V Line Regulation Load Regulation Ground Pin Current
Test Conditions
VCTRL = 2.7V, VPWR = 2.0V, ILOAD = 10mA VCTRL=2.7 to 12V, VPWR=1.75V to 5.5V, ILOAD =10mA to 6.0A Q VCTRL = 2.5 to 12V, VPWR = 3.0V to 5.5V, ILOAD = 1.0mA Q VCTRL = 2.75V, VPWR = 2.1V, ILOAD = 10mA to 6.0A Q VCTRL = 5.0V, VPWR = 3.3V, ILOAD = 0mA Q VCTRL= 2.75V, VPWR= 2.05V, ILOAD= 7.0A, TJ = 25°C
Min. Typ. Max. Units
1.243 1.250 1.257 1.237 1.250 1.263 --------60 7.1 6.6 -------1.0 1.0 5.0 6.0 ---50 80 8.0 --------3.0 5.0 10 10 120 120 130 120 ---1.33 1.33 1.35 0.62 0.80 0.80 0.02 %/W V V µA dB mA V mV
Minimum Load Current VCTRL = 5.0V, VPWR = 3.3V, VADJ= 0V QR
Control Pin Current SVCTRL= 2.75V, VPWR= 2.05V, ILOAD= 7.0A, TJ = 125°C VCTRL= 2.75V, VPWR= 2.05V, ILOAD= 6.0A, TJ = -55°C Adjust Pin Current VADJ= 0V Ripple Rejection Current Limit VCTRL = VPWR = 5.0V (AVG), VRIPPLE = 1.0VP-P, f= 120Hz IOUT = 4.0A TJ = 25°C VCTRL= 2.75V, VPWR= 2.05V, ∆VOUT = 100mV, TJ = 25°C VCTRL=2.75V, VPWR=2.05V, ∆VOUT=100mV, TJ=-55°C & TJ=+125°C VPWR = 3.3V, ILOAD = 7.0A, TJ = 25°C Minimum VCONTROL VPWR = 3.3V, ILOAD = 7.0A, TJ = 125°C VPWR = 3.3V, ILOAD = 6.0A, TJ = -55°C VCTRL = 2.75V, ILOAD = 7.0A, TJ = 25°C Minimum VPWR Thermal Regulation Dropout Voltage VCTRL = 2.75V, ILOAD = 7.0A, TJ = 125°C VCTRL = 2.75V, ILOAD = 6.0A, TJ = -55°C VPWR = 5.0V, IO = 7.0A, PD ≥ 20W, pulse width = 30ms VCTRL= 2.75V, VPWR = 2.05V, ILOAD = 10mA
A
Dropout is caused by either minimum control voltage or minimum power voltage. Both parameters are specified with respect to the output voltage. The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Footnotes
Q- Denotes specifications which apply over the full operating temperature range. R- The minimum load current is minimum current required to maintain regulation. Normally the current in
the resistor divider used to set the output voltage is selected to meet the minimum load current requirement. S- The control pin current is the drive current required for the output transistor. The control pin current is approximately 0.01% output current. The minimum value is equal to quiescent current of the device.
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OM7580SC
Fig 1: Typical Power Voltage Vs Output Current
Fig 2: Typical Control Voltage Vs Output Current
Fig 3: Typical Reference Voltage Vs Temperature
Fig 4: Typical Control Pin Current Vs Output Current
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OM7580SC
3.3V Pin5
220uF 1uF ( x5 ) 0.1uF V POWER Sense V OUT
Pin1 Pin3
0.1uF 1uF ( x5 ) 330uF
OM7580 5V
V CONTROL ADJ R1
Pin4
22uF 0.1uF
Pin2
VOUT = 1.25V(1 + (R2/R1)) + IADJ(R2) IADJ = 50uA @ 25°C
R2
Fig 5: Typical Application Layout Consideration It is recommended that output capacitors be located as close as possible to the VOUT terminal of the device to prevent any high frequency oscillation that may result due to excessive stray inductance. Specfications for capacitors: 330µF Tantalum Low ESR, 220µF Electrolytic, 22µF Electrolytic
Case Outline and Dimensions — MO-078AA
Pin Assignment
Pin # 1 Pin Description SENSE ADJUST VOUT V CTRL V PWR
12345
2 3 4 5
Part Numbering Nomenclature
OM
Omnirel
7580
Device
S
S=Isolated
C
Package
X
Screening
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, Tel: (978) 534-5776 Data and specifications subject to change without notice. 08/03
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