Datasheet

3
LT1580/LT1580-2.5
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Regulation: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 0mA to 7A ● 15mV
LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.1V, I
LOAD
= 10mA to 7A ● 15mV
Minimum Load Current: LT1580 V
CONTROL
= 5V, V
POWER
= 3.3V, V
ADJ
= 0V (Note 3) ● 510mA
Control Pin Current: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C610mA
(Note 4) V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C12mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3060mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C70mA
V
CONTROL
= 5V, V
POWER
= 3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3370mA
V
CONTROL
= 5V, V
POWER
= 3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C80mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 60 120 mA
V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 130 mA
Control Pin Current: LT1580 V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C610mA
(Note 4) V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C12mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3060mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C70mA
V
CONTROL
= 2.75V, V
POWER
= 1.75V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C3370mA
V
CONTROL
= 2.75V, V
POWER
= 1.75V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C80mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 60 120 mA
V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 130 mA
Ground Pin Current: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, I
LOAD
= 0mA ● 610mA
ADJ Pin Current: LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.05V, I
LOAD
= 10mA ● 50 120 µA
Current Limit: LT1580-2.5 V
CONTROL
= 5V, V
POWER
= 3.3V, ∆V
OUT
= 100mV, 0°C ≤ T
J
≤ 125°C 7.1 8 A
V
CONTROL
= 5V, V
POWER
= 3.3V, ∆V
OUT
= 100mV, –40°C ≤ T
J
< 0°C 6.6 A
LT1580 (V
ADJ
= 0V) V
CONTROL
= 2.75V, V
POWER
= 2.05V, ∆V
OUT
= 100mV, 0°C ≤ T
J
≤ 125°C 7.1 8 A
V
CONTROL
= 2.75V, V
POWER
= 2.05V, ∆V
OUT
= 100mV, –40°C ≤ T
J
< 0°C 6.6 A
Ripple Rejection: LT1580-2.5 V
C
= V
P
= 5V Avg, V
RIPPLE
= 1V
P-P
, I
OUT
= 4A, T
J
= 25°C6080dB
LT1580 V
C
= V
P
= 3.75V Avg, V
RIPPLE
= 1V
P-P
, V
ADJ
= 0V, I
OUT
= 4A, T
J
= 25°C6080 dB
Thermal Regulation 30ms Pulse 0.002 0.020 %/W
Thermal Resistance, Junction-to-Case T, T7 Packages, Control Circuitry/Power Transistor 0.65/2.70 °C/W
Dropout Voltage (Note 2)
Minimum V
CONTROL
: LT1580-2.5 V
POWER
= 3.3V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
(V
CONTROL
– V
OUT
)V
POWER
= 3.3V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 3.3V, I
LOAD
= 1A, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
V
POWER
= 3.3V, I
LOAD
= 1A, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 3.3V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C 1.06 1.20 V
V
POWER
= 3.3V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C 1.25 V
V
POWER
= 3.3V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 1.15 1.30 V
V
POWER
= 3.3V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 1.35 V
Minimum V
CONTROL
: LT1580 V
POWER
= 2.05V, I
LOAD
= 100mA, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
(V
CONTROL
– V
OUT
)V
POWER
= 2.05V, I
LOAD
= 100mA, –40°C ≤ T
J
< 0°C 1.20 V
(V
ADJ
= 0V) V
POWER
= 2.05V, I
LOAD
= 1A, 0°C ≤ T
J
≤ 125°C 1.00 1.15 V
V
POWER
= 2.05V, I
LOAD
= 1A, –40°C ≤ T
J
< 0°C 1.20 V
V
POWER
= 2.05V, I
LOAD
= 2.75A, 0°C ≤ T
J
≤ 125°C 1.05 1.18 V
V
POWER
= 2.05V, I
LOAD
= 2.75A, –40°C ≤ T
J
< 0°C 1.23 V
V
POWER
= 2.05V, I
LOAD
= 4A, 0°C ≤ T
J
≤ 125°C 1.06 1.20 V
V
POWER
= 2.05V, I
LOAD
= 4A, –40°C ≤ T
J
< 0°C 1.25 V
V
POWER
= 2.05V, I
LOAD
= 7A, 0°C ≤ T
J
≤ 125°C 1.15 1.30 V
V
POWER
= 2.05V, I
LOAD
= 6.5A, –40°C ≤ T
J
< 0°C 1.35 V