ISL78200_14 Datasheet, PDF (8/22 Pages) Intersil Corporation – 2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter

ISL78200
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 over the operating temperature range, -40°C to +105°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
Minimum Output Voltage
0.5
V
Slew Rate
PFM MODE CONTROL
SR
C_LOAD = 50pF
5
V/µs
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)
90 150 mΩ
LGATE Source Resistance
100mA Source Current
3.5
Ω
LGATE Sink Resistance
100mA Sink Current
3.3
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_{AUXVCC_HYS}
2.4 3.2 3.8 µA
0.74 0.8 0.86 V
AUXVCC Hysteresis Sink Current
POWER GOOD MONITOR
I_{AUXVCC_HYS}
2.4 3.2 3.8 µA
Overvoltage Rising Trip Point
Overvoltage Rising Hysteresis
Undervoltage Falling Trip Point
Undervoltage Falling Hysteresis
PGOOD Rising Delay
PGOOD Leakage Current
PGOOD Low Voltage
PROTECTION
V_FB/V_REF
V_FB/V_OVTRIP
V_FB/V_REF
V_FB/V_UVTRIP
t_{PGOOD_DELAY}
V_PGOOD
Percentage of Reference Point
Percentage Below OV Trip Point
Percentage of Reference Point
Percentage Above UV Trip Point
f_OSC = 500kHz
PGOOD HIGH, V_PGOOD = 4.5V
PGOOD LOW, I_PGOOD = 0.2mA
104 110 116 %
3
%
84
90
96
%
3
%
2
ms
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 Latching-off Trip Point
Percentage of Reference Point
LG = UG = LATCH LOW
120
%
OV Non-Latching-off Trip Point
Percentage of Reference Point
LG = UG = LOW
110
%
OV Non-Latching-off Release Point
Percentage of Reference Point
102.5
%
OVER-TEMPERATURE PROTECTION
Over-Temperature Trip Point
155
°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 not included. The wire bond resistance between VIN and PHASE pin is 32mΩ typical.
8
FN7641.2
December 24, 2013