MCP16323T-ADJE Datasheet, PDF (3/32 Pages) Microchip Technology – 18V Input, 3A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication

MCP16323
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
V_IN....................................................................... -0.3V to 20V
SW ......................................................................... -1V to 20V
BOOST – GND ........................................... -0.3V to (V_IN+6V)
EN,V_FB, PG Voltage.............................................. -0.3V to 6V
Continuous Total Power Dissipation .......................................
...................................................See Thermal Characteristics
Storage Temperature ....................................-65°C to +150°C
Operating Junction Temperature...................-40°C to +125°C
ESD Protection On All Pins:
HBM ......................................................................... 3 kV
MM ..........................................................................200V
† Notice: Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. This is a stress rating only and functional
operation of the device at those or any other conditions
above those indicated in the operational sections of this
specification is not intended. Exposure to maximum
rating conditions for extended periods may affect
device reliability.
DC CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated, T_A = +25°C, V_IN = 12V, V_OUT = 3.3V, I_OUT = 300 mA,
L = 4.7 µH, C_OUT = 2x22 µF, C_IN = 2x10 µF. Boldface specifications apply over the T_J range of -40°C to +125°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
V_IN Supply Voltage
Input Voltage
Quiescent Current
(Switching)
V_IN
6.0
—
18
V
I_Q
—
5.2
—
mA I_OUT = 0 mA
Quiescent Current
(Non-Switching)
Quiescent Current -
Shutdown
I_Q
—
2.3
—
mA Closed Loop in
Overvoltage
I_OUT = 0 mA
I_Q
—
5
10
µA EN = 0
V_IN Under Voltage Lockout
Undervoltage Lockout Start
UVLO_STRT
5.5
5.75
Undervoltage Lockout
Hysteresis
UVLO_HYS
—
0.65
6.0
V V_IN Rising
—
V Non-Switching
Output Characteristics
Maximum Output Current
MCP16323
I_OUT
3
—
—
A Note 2
Output Voltage Adjust
Range
V_OUT
0.9
—
5.0
V
Output Voltage Tolerance
in PWM Mode
V_OUT-PWM
V_OUT - 2% V_OUT
V_OUT + 2% V I_OUT = 1A
Output Voltage Tolerance
in PFM Mode
V_OUT-PFM
V_OUT - 1% V_OUT + 1% V_OUT + 3.5% V I_OUT = 0A
Feedback Voltage
Feedback Reference
Tolerance
V_FB
V_FB-TOL
0.886
0.9
-1.5
—
0.914
V
1.5
%
Note 1: Regulator SW pin is forced off for 240 ns every 8 cycles to ensure the BOOST cap is replenished.
2: As a result of the maximum duty cycle limitations, 3A of output current for 5V output conditions may not
regulate the voltage. External component selection may have an impact on this. A minimum input voltage
of 6.5V is recommended.
© 2011 Microchip Technology Inc.
DS22284A-page 3