Datasheet

3
LT1764A Series
1764afb
LT1764A-2.5 V
IN
= 3V, I
LOAD
= 1mA 2.462 2.500 2.538 V
3.5V < V
IN
< 20V, 1mA < I
LOAD
< 3A ● 2.412 2.500 2.575 V
LT1764A-3.3 V
IN
= 3.8V, I
LOAD
= 1mA 3.250 3.300 3.350 V
4.3V < V
IN
< 20V, 1mA < I
LOAD
< 3A ● 3.183 3.300 3.400 V
ADJ Pin Voltage LT1764A V
IN
= 2.21V, I
LOAD
= 1mA 1.192 1.210 1.228 V
(Notes 3, 4) E Grade: 2.7V < V
IN
< 20V, 1mA < I
LOAD
< 3A ● 1.168 1.210 1.246 V
MP Grade: 2.8V < V
IN
< 20V, 1mA < I
LOAD
< 3A ● 1.168 1.210 1.246 V
Line Regulation LT1764A-1.5 ∆V
IN
= 2.21V to 20V, I
LOAD
= 1mA ● 2.5 10 mV
LT1764A-1.8 ∆V
IN
= 2.3V to 20V, I
LOAD
= 1mA ● 310mV
LT1764A-2.5 ∆V
IN
= 3V to 20V, I
LOAD
= 1mA ● 410mV
LT1764A-3.3 ∆V
IN
= 3.8V to 20V, I
LOAD
= 1mA ● 4.5 10 mV
LT1764A (Note 3) ∆V
IN
= 2.21V to 20V, I
LOAD
= 1mA ● 210mV
Load Regulation LT1764A-1.5 V
IN
= 2.7V, ∆I
LOAD
= 1mA to 3A 3 7 mV
V
IN
= 2.7V, ∆I
LOAD
= 1mA to 3A ● 23 mV
LT1764A-1.8 V
IN
= 2.8V, ∆I
LOAD
= 1mA to 3A 4 8 mV
V
IN
= 2.8V, ∆I
LOAD
= 1mA to 3A ● 25 mV
LT1764A-2.5 V
IN
= 3.5V, ∆I
LOAD
= 1mA to 3A 4 10 mV
V
IN
= 3.5V, ∆I
LOAD
= 1mA to 3A ● 30 mV
LT1764A-3.3 V
IN
= 4.3V, ∆I
LOAD
= 1mA to 3A 4 12 mV
V
IN
= 4.3V, ∆I
LOAD
= 1mA to 3A ● 40 mV
LT1764A (Note 3) V
IN
= 2.7V, ∆I
LOAD
= 1mA to 3A 2 5 mV
E Grade: V
IN
= 2.7V, ∆I
LOAD
= 1mA to 3A ● 20 mV
MP Grade: V
IN
= 2.8V, ∆I
LOAD
= 1mA to 3A ● 20 mV
Dropout Voltage I
LOAD
= 1mA 0.02 0.05 V
V
IN
= V
OUT(NOMINAL)
I
LOAD
= 1mA ● 0.10 V
(Notes 5, 6, 11) I
LOAD
= 100mA 0.07 0.13 V
I
LOAD
= 100mA ● 0.18 V
I
LOAD
= 500mA 0.14 0.20 V
I
LOAD
= 500mA ● 0.27 V
I
LOAD
= 1.5A 0.25 0.33 V
I
LOAD
= 1.5A ● 0.40 V
I
LOAD
= 3A 0.34 0.45 V
I
LOAD
= 3A ● 0.66 V
GND Pin Current I
LOAD
= 0mA ● 1 1.5 mA
V
IN
= V
OUT(NOMINAL)
+ 1V I
LOAD
= 1mA ● 1.1 1.6 mA
(Notes 5, 7) I
LOAD
= 100mA ● 3.5 5 mA
I
LOAD
= 500mA ● 11 18 mA
I
LOAD
= 1.5A ● 40 75 mA
I
LOAD
= 3A ● 120 200 mA
Output Voltage Noise C
OUT
= 10µF, I
LOAD
= 3A, BW = 10Hz to 100kHz 40 µV
RMS
ADJ Pin Bias Current (Notes 3, 8) 310µA
Shutdown Threshold V
OUT
= Off to On ● 0.9 2 V
V
OUT
= On to Off ● 0.25 0.75 V
SHDN Pin Current V
SHDN
= 0V 0.01 1 µA
(Note 9) V
SHDN
= 20V 730µA
Quiescent Current in Shutdown V
IN
= 6V, V
SHDN
= 0V 0.01 1 µA
Ripple Rejection V
IN
– V
OUT
= 1.5V (Avg), V
RIPPLE
= 0.5V
P-P
,5563dB
f
RIPPLE
= 120Hz, I
LOAD
= 1.5A
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C. (Note 2)