5
Absolute Maximum Ratings Thermal Information
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V to 18.0V
Logic Input Voltage Range (SDA, SCL, ENT) . . . . . . . . -0.5V to 7V
Thermal Resistance (Typical, Notes 3, 4) θ
JA
(
o
C/W) θ
JC
(
o
C/W)
EPSOIC Package (Notes 3, 4) . . . . . . . 29 4
QFN Package (Notes 3, 4) . . . . . . . . . . 34 6
Maximum Junction Temperature (Note 5) . . . . . . . . . . . . . . . .150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -40
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300
o
C
(SOIC - Lead Tips Only)
Operating Temperature Range . . . . . . . . . . . . . . . . . -20
o
C to 85
o
C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
3. θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
4. For θ
JC
, the "case temp" location is the center of the exposed metal pad on the package underside.
5. The device junction temperature should be kept below 150
o
C. Thermal shut-down circuitry turns off the device if junction temperature exceeds
+150
o
C typically.
Electrical Specifications V
CC
= 12V, T
A
= -20
o
C to +85
o
C, unless otherwise noted. Typical values are at T
A
= 25
o
C. EN1 = EN2 = H,
LLC1 = LLC2 = L, ENT1 = ENT2 = L, DCL = L, DSQIN1 = DSQIN2 = L, Iout = 12mA, unless otherwise noted.
See software description section for I
2
C access to the system.
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage Range 81214 V
Standby Supply Current EN1 = EN2 = L - 1.5 3.0 mA
Supply Current I
IN
EN1 = EN2 = LLC1 = LLC2 = VSEL1 =
VSEL2 = ENT1 = ENT2 = H, No Load
-4.08.0mA
UNDER VOLTAGE LOCKOUT
Start Threshold 7.5 - 7.95 V
Stop Threshold 7.0 - 7.55 V
Start to Stop Hysteresis 350 400 500 mV
SOFT START
COMP Rise Time (Note 6) (Note 7) - 512 - Cycles
Output Voltage (Note 7) V
O1
VSEL1 = L, LLC1 = L 12.74 13.0 13.26 V
V
O1
VSEL1 = L, LLC1 = H 13.72 14.0 14.28 V
V
O1
VSEL1 = H, LLC1 = L 17.64 18.0 18.36 V
V
O1
VSEL1 = H, LLC1 = H 18.62 19.0 19.38 V
V
O2
VSEL2 = L, LLC2 = L 12.74 13.0 13.26 V
V
O2
VSEL2 = L, LLC2 = H 13.72 14.0 14.28 V
V
O2
VSEL2 = H, LLC2 = L 17.64 18.0 18.36 V
V
O2
VSEL2 = H, LLC2 = H 18.62 19.0 19.38 V
Line Regulation DV
O1,
DV
O2
V
IN
= 8V to 14V; V
O1
, V
O2
= 13V - 4.0 40.0 mV
V
IN
= 8V to 14V; V
O1
, V
O2
= 18V - 4.0 60.0 mV
Load Regulation DV
O1,
DV
O2
I
O
= 12mA to 350mA - 50 80 mV
I
O
= 12mA to 750mA (Note 8) - 100 200 mV
Dynamic Output Current Limiting I
MAX
DCL = L, ISEL1/2 = L 425 - 550 mA
DCL = L, ISEL1/2 = H (Note 8) 775 850 950 mA
Dynamic Overload Protection Off Time TOFF DCL = L, Output Shorted (Note 8) - 900 - ms
Dynamic Overload Protection On Time TON - 20 - ms
ISL6405
