XRP7713_10 Datasheet, PDF (2/29 Pages) Exar Corporation – Three Channel Digital PWM Step Down Controller

XRP7713
Three Channel Digital PWM Step Down 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
VDD..................................................................... 2.0V
VIN....................................................................... 27V
LXx..............................................................-1V to 27V
LXx............................................................. -5V to -1V¹
Logic Inputs, GPIOs, SDA, SCL ................................... 6V
BSTx, GHx.................................................... VLXx + 6V
ESD Rating (HBM - Human Body Model) .................... 2kV
Storage Temperature .............................. -65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
Note 1: 200ns Transient
OPERATING RATINGS
Input Voltage Range.....................................5.5V to 25V
Input Voltage VIN=VCCA ........................... 4.75V to 5.5V
Junction Temperature Range ....................-40°C to 125°C
Thermal Resistance θJA ...................................... 22°C/W
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C 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 TJ = 25°C, and are provided for
reference purposes only. Unless otherwise indicated, VIN = 4.75V to 25V.
Quiescent Current
Parameter
Min.
VIN Supply Current in STANDBY
VIN Supply Current in
SHUTDOWN
VIN Supply Current
Typ.
9
180
28
Max.
Units
mA
µA
mA
VIN Supply Current
50
mA
Conditions
LDOOUT enabled (no load)
No switching converter channels enabled
I²C communication active
Switching frequency = 400kHz
EN=0V, VIN≥5.2V
3 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 300kHz
3 channels running,
GH and GH = 1nF load each
VIN=12V, Switching frequency = 1MHz
Step Down Controllers
Parameter
VOUT Regulation Accuracy
VOUT regulation range
VOUT set point resolution
VOUT set point resolution
VOUT Input Current
VOUT Input Resistance
Min.
-20
-40
0.9
Typ.
50
100
100
120
Max.
20
40
5.1
Units
mV
mV
nA
kΩ
Conditions
• 0.9V ≤ VOUT ≤ 2.5V
• 2.6V ≤ VOUT ≤ 5.1V
• Programmable range of each channel²
0.9V ≤ VOUT ≤ 2.5V
2.6V ≤ VOUT ≤ 5.1V
0.9V < VOUT <= 2.5V
2.6V ≤ VOUT ≤ 5.1V
Note 2: Voltages above 5.1V can be obtained by using an external voltage divider.
© 2010 Exar Corporation
2/29
Rev. 1.1.1