ISL78201 Datasheet, PDF (8/23 Pages) Intersil Corporation – 40V 2.5A Regulator with Integrated High-side MOSFET for Synchronous Buck or Boost Buck Converter

ISL78201
Electrical Specifications Refer to the Block Diagram (page 4) and Typical Application Schematics (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 6) TYP (Note 6) UNITS
Default PFM Current Threshold
MODE = VCC or floating
700
mA
INTERNAL HIGH-SIDE MOSFET
Upper MOSFET r_DS(ON)
LOW-SIDE MOSFET GATE DRIVER
r_{DS(ON)_UP} (Note 7) 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
BOOST CONVERTER CONTROL
EXT_BOOST Boost_Turn-off Threshold Voltage
0.74 0.8 0.86 V
EXT_BOOST Hysteresis Sink Current
AUXVCC Boost Turn-off Threshold Voltage
I_{EXT_BOOST_HYS}
2.1 3.2 4.2 µA
0.74 0.8 0.86 V
AUXVCC Hysteresis Sink Current
POWER GOOD MONITOR
I_{AUXVCC_HYS}
2.1 3.2 4.2 µA
Overvoltage Rising Trip Point
Overvoltage Rising Hysteresis
Undervoltage Falling Trip Point
Undervoltage Falling Hysteresis
PGOOD Rising Delay
PGOOD Leakage Current
PGOOD Low Voltage
OVERCURRENT PROTECTION
V_FB/V_REF Percentage of reference point
V_FB/V_OVTRIP Percentage below OV trip point
V_FB/V_REF Percentage of reference point
V_FB/V_UVTRIP Percentage above UV trip point
t_{PGOODR_DELAY}
PGOOD HIGH, V_PGOOD = 4.5V
V_PGOOD PGOOD LOW, I_PGOOD = 0.2mA
104 110 116 %
3
%
84 90 96
%
3
%
128
cycle
10
nA
0.10
V
Default Cycle-by-cycle Current Limit Threshold
Hiccup Current Limit Threshold
OVERVOLTAGE PROTECTION
I_{OC_1}
I_{OC_2}
ILIMIT = GND or VCC or floating
Hiccup, I_{OC_2}/I_{OC_1}
3
3.6 4.2
A
115
%
OV 120% Trip Point
Active in and after soft-start
Percentage of Reference Point
LG = UG = LOW
120
%
OV 120% Release Point
Active in and after soft-start
Percentage of reference point
102.5
%
OV 110% Trip Point
Active after soft-start done
Percentage of reference point
LG = UG = LOW
110
%
OV 110% Release Point
Active after soft-start done
Percentage of Reference Point
102.5
%
OVER-TEMPERATURE PROTECTION
Over-temperature Trip Point
160
°C
Over-temperature Recovery Threshold
140
°C
NOTES:
6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
7. Wire bonds included.
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8
FN8615.1
March 31, 2015