Datasheet

LTC3388-1/LTC3388-3
4
338813f
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are for T
A
= 25°C (Note 2). Unless otherwise noted, V
IN
= 5.5V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
D0/D1/EN/STBY Input High Voltage
l
1.2 V
V
IL(D0, D1)
D0/D1 Input Low Voltage
l
0.4 V
V
IL(EN,STBY)
EN/STBY Input Low Voltage
l
150 mV
I
IH
D0/D1/EN/STBY Input High Current 10 nA
I
IL
D0/D1/EN/STBY Input Low Current 10 nA
Additional I
Q
at V
IN
with EN at V
IH(MIN)
V
EN
= 1.2V, V
IN
= 4V 40 nA
Additional I
Q
at V
IN
with STBY at V
IH(MIN)
V
STBY
= 1.2V, V
IN
= 4V 40 nA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3388-1/LTC3388-3 are tested under pulsed load conditions
such that T
J
≈ T
A
. The LTC3388E-1/LTC3388E-3 are guaranteed to meet
specifications from 0°C to 85°C junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3388I-1/LTC3388I-3 are guaranteed over the –40°C to 125°C
operating junction temperature range. Note that the maximum ambient
temperature consistent with these specifications is determined by specific
operating conditions in conjunction with board layout, the rated package
thermal impedance and other environmental factors.
Note 3: The junction temperature (T
J
, in °C) is calculated from the ambient
temperature (T
A
, in °C) and power dissipation (PD, in Watts) according
to the formula: T
J
= T
A
+ (P
D
• θ
JA
), where θ
JA
(in °C/W) is the package
thermal impedance.
Note 4: Dynamic supply current is higher due to gate charge being
delivered at the switching frequency.
Input I
Q
vs V
IN
, UVLO Input I
Q
vs V
IN
, No Load Input I
Q
vs V
IN
, EN Low
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
(V)
INPUT I
Q
(nA)
800
400
500
600
700
300
200
100
0
338813 G01
1 1.5 2 2.50 0.5
–40°C
85°C
25°C
125°C
V
IN
(V)
INPUT I
Q
(nA)
1600
1000
1200
1400
800
600
400
200
338813 G02
6 8 10 202 4 16 1812 14
85°C
25°C
–40°C
125°C
D1 = D0 = 0
V
IN
(V)
INPUT I
Q
(nA)
1200
800
1000
600
0
200
400
338813 G03
6 8 10 20024 161812 14
85°C
25°C
125°C
–40°C