ISL78206 Datasheet, PDF (7/19 Pages) Intersil Corporation – 40V 2.5A Buck Controller with Integrated High-side 40V 2.5A Buck Controller with Integrated High-side

ISL78206
Electrical Specifications Refer to “Block Diagram” on page 4 and Typical Application Schematics on page 5. Operating Conditions
Unless Otherwise Noted: V_IN = 12V, or V_CC = 4.5V, T_A = -40°C to +105°C. Typicals are at T_A = +25°C. Boldface limits apply across the operating
temperature range, -40°C to +105°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
OSCILLATOR
PWM Frequency
f_OSC
R_T = 665kΩ
160 200 240 kHz
R_T = 51.1kΩ
1870 2200 2530 kHz
FS Pin connected to VCC or Floating or GND 450 500 550 kHz
MIN ON Time
MIN OFF Time
SYNCHRONIZATION
t_{MIN_ON}
t_{MIN_OFF}
130 225 ns
210 330 ns
Input High Threshold
V_IH
Input Low Threshold
V_IL
Input Minimum Pulse Width
2
V
0.5
V
25
ns
Input Impedance
100
kΩ
Input Minimum Frequency Divided by Free Running
1.1
Frequency
Input Maximum Frequency Divided by Free Running
1.6
Frequency
Output Pulse Width
Output Pulse High
C_SYNC = 100pF
V_OH
R_LOAD = 1kΩ
100
ns
V_CC-
V
0.25
Output Pulse Low
V_OL
REFERENCE VOLTAGE
GND
V
Reference Voltage
System Accuracy
V_REF
0.8
V
-1.0
1.0 %
FB Pin Source Current
5
nA
SOFT-START
Soft-start Current
I_SS
ERROR AMPLIFIER
3
5
7
µA
Unity Gain-bandwidth
DC Gain
Maximum Output Voltage
C_LOAD = 50pF
C_LOAD = 50pF
10
MHz
88
dB
3.6
V
Minimum Output Voltage
0.5
V
Slew Rate
INTERNAL HIGH-SIDE MOSFET
SR
C_LOAD = 50pF
5
V/µs
Upper MOSFET r_DS(ON)
LOW-SIDE MOSFET GATE DRIVER
r_{DS(ON)_UP} (Note 6) Limits apply for +25°C
127 140 mΩ
LGate Source Resistance
100mA Source Current
3.5
Ω
LGATE Sink Resistance
100mA Sink Current
2.8
Ω
POWER GOOD MONITOR
Overvoltage Rising Trip Point
Overvoltage Rising Hysteresis
V_FB/V_REF Percentage of Reference Point
V_FB/V_OVTRIP Percentage Below OV Trip Point
104 110 116 %
3
%
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7
FN8618.2
March 25, 2015