XRP7704 Datasheet, PDF (2/31 Pages) Exar Corporation – Quad-Output Digital PWM Buck Controller

REV 1.1.0
XRP7704
Quad-Output Digital PWM Buck Controller
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
AVDD, DVDD.……………………………………………………...2.0V
VIN1, VIN2…………………..…………………………….….. 22V
LXx……………..………………………………………. -1V to 22V
Logic Inputs……………………………………………............ 6V
BSTx, GHx……...…………………………… ….…………… 27V
Storage Temperature……………………..……. -65°C to 150 °C
Thermal Resistance……………………………………... 18°C/W
Lead Temperature (Soldering, 10 sec)…………………..300 °C
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: Ta=Tj=25°C, 6.5≤VIN1≤20V, 6.5≤VIN2≤20V, ENABLE=HIGH, C_GL=C_GH=1nF.
Those specifications denoted by a ♦ are guaranteed over the full operating temperature range, -40°C <Tj< 125°C.
QUIESCENT CURRENT
PARAMETER
VIN Supply Current in
STANDBY
VIN Supply Current in
SHUTDOWN
VIN Supply Current
VIN Supply Current
MIN TYP MAX
UNITS
9
mA
180
µA
28
mA
50
mA
CONDITIONS
LDOOUT enabled (no load)
No switching converter channels
enabled
I2C Communication Active
Switching Frequency = 400kHz
EN = 0V
VIN1 = VIN2 = 12V
4 channels running
GH and GL = 1nF Load each
VIN = 12V
Switching Frequency = 300KHz
4 channels running
GH and GL=1nF Load each
VIN = 12V
Switching Frequency = 1MHz
BUCK CONTROLLERS
PARAMETER
MIN TYP MAX
-20
20
VOUT Regulation Accuracy
-40
40
Feedback Resolution
Feedback Resolution
VOUT input voltage
regulation range
VOUT set point resolution
VOUT set point resolution
VOUT Input Current
VOUT Input Resistance
5
10
0.9
5.1
50
100
1
120
UNITS
mV
mV
mV
mV
V
mV
mV
µA
kΩ
CONDITIONS
♦ _{0.9 <= VOUT <= 2.5V}
♦ _{2.6 <= VOUT <= 5.1V}
0.9 <= VOUT <= 2.5V
2.6 <= VOUT <= 5.1V
Programmable range of each
♦ _channel.
0.9 <= VOUT <= 2.5V
2.6 <= VOUT <= 5.1V
♦ 0.9 < VOUT <= 2.5V
2.6 <= VOUT <= 5.1V
EXAR CONFIDENTIAL. PROPRIETARY. DO NOT DISTRIBUTE OR COPY.
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