XRP6141 Datasheet, PDF (2/14 Pages) Exar Corporation – 35A Synchronous Step Down COT Controller

XRP6141
35A Synchronous Step Down COT 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.
VIN ............................................................ -0.3V to 28V
VCC .......................................................... -0.3V to 6.0V
BST ......................................................... -0.3V to 34V²
BST-SW ......................................................-0.3V to 6V
SW, ILIM .................................................. -5V to 28V^1,2
GH................................................... -0.3V to BST+0.3V
GH-SW........................................................-0.3V to 6V
ALL other pins ................................... -0.3V to VCC+0.3V
Storage Temperature .............................. -65°C to 150°C
Junction Temperature .......................................... 150°C
Power Dissipation ................................ Internally Limited
Lead Temperature (Soldering, 10 sec) ................... 300°C
ESD Rating (HBM - Human Body Model) .................... 2kV
OPERATING RATINGS
VIN ........................................................... -0.3V to 22V
VCC .......................................................... -0.3V to 5.5V
SW, ILIM ................................................... -1V to 26V¹
PGOOD, VCC, TON, SS, EN, GL, FB ............ -0.3V to 5.5V
Switching Frequency ............................. 200kHz-800kHz³
Junction Temperature Range ....................-40°C to 125°C
Note 1: SW pin’s minimum DC range is -1V, transient is
-5V for less than 50ns
Note 2: No external voltage applied
Note 3: Recommended
ELECTRICAL SPECIFICATIONS
Specifications are for 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 = 12V, BST=VCC, SW=GND=PGND=0V, CGH=CGL=3.3nF.
Parameter
Min.
Power Supply Characteristics
5
VIN, Input Voltage Range
4.5
IVIN, VIN supply current
IVCC, VCC Quiescent current
IVIN, VIN supply current
IOFF, Shutdown current
Enable and Under-Voltage Lock-Out UVLO
VIH_EN, EN Pin Rising Threshold
1.8
VEN_HYS, EN Pin Hysteresis
VIH_EN, EN Pin Rising Threshold for
DCM/CCM operation
2.9
VEN_HYS, EN Pin Hysteresis
VCC UVLO start threshold, rising edge 4.00
VCC UVLO Hysteresis
Reference voltage
Typ.
12
5.0
0.7
0.7
11
0.1
1.9
50
3.0
100
4.25
200
Max. Units
22
V
5.5
2
mA
2
mA
mA
μA
2.0
V
mV
3.1
V
mV
4.50 V
mV
Conditions
VCC regulating
•
VCC tied to VIN
• Not switching, V_IN=12V, VFB=0.7V
• Not switching, VCC=VIN=5V, VFB=0.7V
f=300kHz, RON=108.8k, VFB=0.58V
Enable=0V, VIN=12V
•
•
•
0.597 0.600 0.603 V
VIN =5V-22V VCC regulating
VREF, Reference voltage
DC Line regulation
DC Load regulation
0.596
0.604 V
0.594 0.600 0.606 V
±0.1
%
±0.25
%
VIN =4.5V-5.5V tie VCC to VIN
•
VIN =5V-22V VCC regulating,
VIN =4.5V-5.5V tie VCC to VIN
CCM operation, closed loop, applies to any COUT
CCM operation, closed loop, applies to any COUT
© 2015 Exar Corporation
2/14
Rev. 2.0.0