XRP6124 Datasheet, PDF (2/12 Pages) Exar Corporation – Non-Synchronous PFET Step-Down Controller

XRP6124
Non-Synchronous PFET 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.
V_IN (XRP6124) ............................................ -0.3V to 20V
V_IN (XRP6124HV) ........................................ -0.3V to 32V
GATE ...................................................... VIN-GATE<8V
FB, EN ..................................................... -0.3V to 5.5V
Storage Temperature .............................. -65°C to 150°C
Power Dissipation ................................ Internally Limited
Lead Temperature (Soldering, 10 sec) ................... 300°C
ESD Rating (HBM - Human Body Model) .................... 2kV
OPERATING RATINGS
Input Voltage Range V_IN (XRP6124)................3.0V to 18V
Input Voltage Range V_IN (XRP6124HV)............4.5V to 30V
Junction Temperature Range ....................-40°C to 125°C
Thermal Resistance θ_JA .....................................191°C/W
ELECTRICAL SPECIFICATIONS
Specifications are for an Operating Junction Temperature of T_J = 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 T_J = 25°C, and are provided for reference purposes
only. Unless otherwise indicated, V_IN = 3.0V to 18V, T_J = –40°C to 125°C.
Parameter
UVLO Turn-On Threshold
UVLO Turn-On Threshold
UVLO Hysteresis
Operating Input Voltage Range
Shutdown VIN Current
Operating VIN Current
Reference Voltage
VSC_TH, Feedback pin Short
Circuit Latch Threshold
T_ON, Switch On-Time
T_ON, Switch On-Time
T_{OFF_MIN}, Minimum Off-Time
Soft Start Time
EN Turn-On Threshold
EN Turn-Off Threshold
EN Bias Current
Gate Driver Pull-Down
Resistance
Gate Driver Pull-up Resistance
tr, gate rise time
tf, gate fall time
VIN - GATE voltage difference
VIN - GATE voltage difference
Min.
2.5
3.8
3.0
4.5
0.792
0.784
0.50
0.4
0.4
2
5.5
2.6
Typ.
2.8
4.2
0.1
1.5
0.5
0.8
0.8
0.55
0.5
0.5
250
2
0.01
6
5
45
35
6.4
Max.
3.0
4.5
18
30
3
1
0.808
0.816
0.65
0.6
0.6
350
1
0.1
9
8
8
Units
V
V
V
V
V
µA
mA
V
V
V
µs
µs
ns
ms
V
V
µA
Ω
Ω
ns
ns
V
V
• XRP6124
• XRP6124HV
Conditions
• XRP6124
• XRP6124HV
EN=0V, V_IN=12V
VFB=1.2V and after fault
•
•
• V_IN=12V, XRP6124
• V_IN=24V, XRP6124HV
• V_IN=12V
C_GATE=1nF
C_GATE=1nF
• VIN=12V
• VIN=3.0V
© 2011 Exar Corporation
2/12
Rev. 1.1.0