F72820 Datasheet, PDF (14/18 Pages) Feature Integration Technology Inc. – Synchronous Buck PWM DC-DC Controller

7. Electrical Characteristic
F72820
Absolute Maximum Ratings
PARAMETER
SYMBOL
RATINGS
UNIT
IC supply voltage
VCC
7
V
Gate drivers supply voltage
12VCC
15
V
PWM controller outputs
UGATE, LGATE
V
Feedback voltages of both regulators
FB, FB2, COMP
GND - 0.3-17
V
ESD classification
HBM
2
kV
Maximum junction temperature (plastic package)
T_j
Maximum storage temperature
T_STO
Maximum lead temperature (soldering 10s)
150
°C
-65 ~ 150
°C
260
°C
Note: If ICs are stressed beyond the limits listed in the “absolute maximum ratings”, they may be permanently destroyed. These are stress
ratings only and functional operation of the device at these or any other condition beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
Package thermal information
PARAMETER
Thermal resistance junction-ambient
SYMBOL
Rth_ja
SOIC
133
UNIT
°C/W
DC and AC electrical characteristics
PARAMETER
SYMBOL TEST CONDITIONS
VCC SUPPLY CURRENT/Regulated Voltage
Nominal supply current 5VCC
Regulated Voltage from BOOT
I_CC
UGATE, LGATE and DRIVE2 open
V_CC
V_BOOT = 12V
POWER-ON RESET
Rising VCC threshold
VOCSET = 4.5V
Falling VCC threshold
VOCSET1 = 4.5V
Rising V_OCSET Threshold
OSCILLATOR AND Protection
Free running frequency
Ramp Amplitude
F_OSC
△V_OSC
V_CC=5V
FB Over Voltage Trip
FB Rising
MIN. TYP. MAX. UNIT
2
4
mA
5.0
5.5
6
V
3.8
4.0
V
3.1
3.3
V
0.8
1.25
2.0
V
250
300
350
kHz
1.75^*
V_P-P
1.0
1.1
1.2
V
F72820
-11-
Jul 2007
V0.24P