X
X
R
R
P
P
7
7
7
7
1
1
4
4
Q
Q
u
u
a
a
d
d
C
C
h
h
a
a
n
n
n
n
e
e
l
l
D
D
i
i
g
g
i
i
t
t
a
a
l
l
P
P
W
W
M
M
S
S
t
t
e
e
p
p
D
D
o
o
w
w
n
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C
C
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?2011 Exar Corporation
2/29
Rev. 1.1.6
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
VCCA, VCCD, LDOOUT, GLx, VOUTx ............................ 6V
VDD ..................................................................... 2.0V
VIN1, VIN2 ............................................................ 27V
LXx .............................................................. -1V to 27V
LXx ............................................................. -5V to -1V
1
Logic Inputs, GPIOs, SDA, SCL ................................... 6V
BSTx, GHx .................................................... VLXx + 6V
ESD Rating (HBM - Human Body Model) .................... 2kV
Storage Temperature .............................. -65癈 to 150癈
Lead Temperature (Soldering, 10 sec) ................... 300癈
OPERATING RATINGS
Input Voltage Range ..................................... 5.5V to 25V
Input Voltage VIN=VCCA ........................... 4.75V to 5.5V
Junction Temperature Range .................... -40癈 to 125癈
Thermal Resistance ?/DIV>
JA
....................................24.3癈/W
Note 1: 200ns Transient
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of T
J
= 25癈 only; limits applying over the full
Operating Junction Temperature range are denoted by a " . Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at T
J
= 25癈, and are provided for
reference purposes only. Unless otherwise indicated, VIN
1
= 4.75V to 25V, VIN
2
= 4.75V to 25V.
Quiescent Current
Parameter
Min.
Typ.
Max.
Units
Conditions
VIN Supply Current in STANDBY
9
mA
LDOOUT enabled (no load)
No switching converter channels enabled
I
2
C communication active
Switching frequency = 400kHz
VIN Supply Current in
SHUTDOWN
180
礎
EN=0V, VIN1e5.2V, VIN2d25V
VIN Supply Current
28
mA
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 300kHz
VIN Supply Current
50
mA
4 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 1MHz
Step Down Controllers
Parameter
Min.
Typ.
Max.
Units
Conditions
VOUT Regulation Accuracy
-2
20
mV
" 0.9V d VOUT d 2.5V
-4
40
mV
" 2.6V d VOUT d 5.1V
VOUT regulation range
0.9
5.1
" Programmable range of each channel
2
VOUT set point resolution
50
0.9V d VOUT d 2.5V
VOUT set point resolution
100
2.6V d VOUT d 5.1V
VOUT Input Current
100
nA
0.9V < VOUT <= 2.5V
VOUT Input Resistance
120
k&
2.6V d VOUT d 5.1V
Note 2: Voltages above 5.1V can be obtained by using an external voltage divider.
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