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2/12 Rev. 1.5.1
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.
Input Voltage V
IN
....................................... -0.3V to 6.0V
EN, V
FB
Voltage ........................................... -0.3V to V
IN
SW Voltage ...................................... -0.3V to (V
IN
+0.3V)
PMOS Switch Source Current (DC) .............................. 2A
NMOS Switch Sink Current (DC) ................................. 2A
Peak Switch Sink and Source Current ....................... 3.5A
Lead Temperature (Soldering, 10 sec) ................... 260°C
Storage Temp. Range T
STG
....................... -65ºC to 150°C
ESD Rating (HBM - Human Body Model) .................... 2kV
ESD Rating (MM - Machine Model) ........................... 200V
OPERATING RATINGS
Input Voltage Range V
IN
............................... 2.5V to 5.5V
Ambient Temperature Range T
A
................. -40°C to 85°C
Junction Temperature Range T
J
................. -40°C to 125°C
Thermal Resistance θ
JC
...................................... 10°C/W
Thermal Resistance θ
JA
...................................... 55°C/W
Note 1: T
J
is a function of the ambient temperature T
A
and
power dissipation P
D
(T
J
= T
A
+ P
D
x 55°C/W).
Note 2:XRP6657 has a build-in temperature protection
circuitry to avoid damages from overload conditions.
ELECTRICAL SPECIFICATIONS
Specifications are for an Operating Junction Temperature of T
A
= 25°C only; limits applying over the full Operating Ambient
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
A
= 25°C, and are provided for reference purposes
only. Unless otherwise indicated, V
IN
= 5.0V, T
A
= 25°C.
Parameter Min. Typ. Max. Units Conditions
VFB
Regulated Feedback Voltage V
FB
V
A
Reference Voltage Line
Regulation ΔV
FB
3
0.4 %/V • V
IN
= 2.5V to 5.5V
Output Voltage Accuracy ΔV
OUT
%
Output Over-Voltage Lockout
OVL
20 50 80 mV ΔV
OVL
= V
OVL
- V
FB
Output Voltage Line Regulation
OUT
4
0.4 %/V • V
IN
= 2.5V to 5.5V
Peak Inductor Current I
PK
2.4 A
V
IN
=3V, V
FB
=0.5V or V
OUT
=90%,
duty cycle
Output Voltage Load Regulation
LOADREG
0.2 %/A I
OUT
=10mA to 1.5A
Q
2
FB
OUT
Oscillator Frequency f
OSC
Minimum Duty Cycle D
MIN
20 %
PFET
SW
V
EN
=0V, V
SW
=0V or 5V, V
IN
=5V
Enable Threshold V
EN
1.2 V •
EN
EN
Note 1: The Switch Current Limit is related to the Duty Cycle. Please refer to figure 29 for details.
Note 2: Dynamic quiescent current is higher due to the gate charge being delivered at the switching frequency.
Note 3: Reference Voltage Line Regulations is defined as
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