Datasheet LT1580, LT1580-2.5 (Analog Devices) - 4

LT1580/LT1580-2.5
ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum VPOWER: LT1580-2.5 VCONTROL = 5V, ILOAD = 100mA ● 0.10 0.17 V (VPOWER – VOUT) VCONTROL = 5V, ILOAD = 1A ● 0.15 0.22 V VCONTROL = 5V, ILOAD = 4A, TJ = 25°C 0.34 0.40 V VCONTROL = 5V, ILOAD = 4A ● 0.50 V VCONTROL = 5V, ILOAD = 7A, TJ = 25°C 0.54 0.62 V VCONTROL = 5V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C 0.70 0.80 V VCONTROL = 5V, ILOAD = 6.5A, – 40°C ≤ TJ ≤ 0°C 0.70 0.80 V Minimum VPOWER: LT1580 VCONTROL = 2.75V, ILOAD = 100mA ● 0.10 0.17 V (VPOWER – VOUT) VCONTROL = 2.75V, ILOAD = 1A ● 0.15 0.22 V (VADJ = 0V) VCONTROL = 2.75V, ILOAD 2.75A ● 0.26 0.38 V VCONTROL = 2.75V, ILOAD = 4A, TJ = 25°C 0.34 0.40 V VCONTROL = 2.75V, ILOAD = 4A ● 0.50 V VCONTROL = 2.75V, ILOAD = 7A, TJ = 25°C 0.54 0.62 V VCONTROL = 2.75V, ILOAD = 7A, 0°C ≤ TJ ≤ 125°C 0.70 0.80 V VCONTROL = 2.75V, ILOAD = 6.5A, – 40°C ≤ TJ ≤ 0°C 0.70 0.80 V The ● denotes specifications which apply over the full operating
Note 3:
For the LT1580 adjustable device the minimum load current is the temperature range. minimum current required to maintain regulation. Normally the current in
Note 1:
Unless otherwise specified V the resistor divider used to set the output voltage is selected to meet the OUT = VSENSE. For the LT1580 adjustable device V minimum load current requirement. ADJ = 0V.
Note 2:
For the LT1580, dropout is caused by either minimum control
Note 4:
The control pin current is the drive current required for the output voltage (V transistor. This current will track output current with roughly a 1:100 ratio. CONTROL) or minimum power voltage (VPOWER). Both parameters are specified with respect to the output voltage. The specifications represent The minimum value is equal to the quiescent current of the device. the minimum input/output voltage required to maintain 1% regulation.
W U TYPICAL PERFORMANCE CHARACTERISTICS Control Pin Current Dropout Voltage — vs Output Current Minimum Control Voltage Minimum Power Voltage
140 2 1.0 INDICATES GUARANTEED TEST POINTS INDICATES GUARANTEED TEST POINTS INDICATES GUARANTEED TEST POINTS 120 0°C ≤ TJ ≤ 125°C 0°C ≤ T 0 J ≤ 125°C °C ≤ TJ ≤ 125°C 100 ) (V) DATA SHEET LIMIT DATA SHEET LIMIT DATA SHEET LIMIT 80 OUT – V 1 0.5 60 TYPICAL T T TJ = 125°C DEVICE J = 125°C J = 25°C CONTROL T 40 J = 25°C (V CONTROL PIN CURRENT (mA) MINIMUM CONTROL VOLTAGE MINIMUM POWER VOLTAGE (V) 20 0 0 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 1580 G01 1580 G02 1580 G03 4