XR76108 Datasheet, PDF (2/17 Pages) Exar Corporation – 8A and 12A Synchronous Step Down COT Regulator

XR76108 and XR76112
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. Stresses beyond those listed under
Absolute Maximum Ratings may cause
permanent damage to the device. Exposure to
any Absolute Maximum Rating condition for
extended periods may affect device reliability
and lifetime.
PVIN, VIN .................................................... -0.3V to 25V
VCC .......................................................... -0.3V to 6.0V
BST ......................................................... -0.3V to 31V¹
BST-SW ......................................................-0.3V to 6V
SW, ILIM .................................................... -1V to 25V^1,2
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
ESD Rating (CDM – Charged Device Model) .............1.5kV
Operating Ratings
PVIN.............................................................. 3V to 22V
VIN .............................................................4.5V to 22V
VCC ............................................................4.5V to 5.5V
SW, ILIM ..................................................... -1V to 22V²
PGOOD, VCC, TON, SS, EN............................ -0.3V to 5.5V
Switching Frequency ............................. 200kHz-800kHz³
Junction Temperature Range (TJ) ..............-40°C to 125°C
XR76108 Package Power Dissipation max at 25°C ..... 3.8W
XR76112 Package Power Dissipation max at 25°C ..... 4.1W
XR76108 JEDEC51 Package Thermal Resistance θJA........ 26°C/W
XR76112 JEDEC51 Package Thermal Resistance θJA........ 24°C/W
Note 1: No external voltage applied
Note 2: SW pin’s DC range is -1V, transient is -5V for less
than 50ns
Note 3: Recommended
Ordering Information
Part Number
XR76108EL-F
XR76108ELMTR-F
XR76108ELTR-F
XR76112EL-F
XR76112ELMTR-F
XR76112ELTR-F
XR76108EVB
XR76112EVB
Temperature
Range
Marking Package
Packing
Quantity
-40°C≤TJ≤+125°C
76108E
YYWW
XXXXXX
76112E
YYWW
XXXXXX
5x5mm
QFN
XR76108 Evaluation Board
XR76112 Evaluation Board
Bulk
250/Tape & Reel
3K/Tape & Reel
Bulk
250/Tape & Reel
3K/Tape & Reel
“YY” = Year – “WW” = Work Week – “XXXXXX” = Lot Number; when applicable.
Note 1
RoHS Compliant
Halogen Free
Electrical Characteristics
Specifications are for Operating Junction Temperature of TJ = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “•”. Typical values represent the most likely
parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise
indicated, VIN=12V
Parameter
Min.
Power Supply Characteristics
4.5
VIN, Input Voltage Range
4.5
IVIN, VIN supply current
IVCC, VCC Quiescent current
IVIN, VIN supply current (XR76112)
Typ.
12
5.0
0.7
0.7
8
Max. Units
22
V
5.5
1.3 mA
1.3 mA
mA
Conditions
• ^{VCC regulating or in dropout}
VCC tied to VIN
• Not switching, VIN=12V, VFB=0.7V
• Not switching, VCC=VIN=5V, VFB=0.7V
f=300kHz, RON=107k, VFB=0.58V
© 2013-2014 Exar Corporation
2/17
www.exar.com
Rev. 2A