ISL78022_14 Datasheet, PDF (3/19 Pages) Intersil Corporation – Automotive Grade TFT-LCD DC/DC with Integrated Amplifiers

ISL78020, ISL78022
Absolute Maximum Ratings (T_A = +25°C)
IN, CTL to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
COMP, FB, FBP, FBN, DEL, REF to AGND. . . . -0.3V to V_IN + 0.3V
PGND, BGND to AGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +24V
SUP to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +18V
DRVP, SRC to AGND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +36V
POS1, NEG1, OUT1, POS2, NEG2, OUT2, POS3, OUT3,
POS4, NEG4, OUT4, POS5, OUT5 to AGND . -0.3V to V_SUP + 0.3V
DRVN to AGND . . . . . . . . . . . . . . . . . . . . . . .V_IN -20V to V_IN + 0.3V
Thermal Information
COM, DRN to AGND . . . . . . . . . . . . . . . . . . . . -0.3V to V_SRC +0.3V
LX Maximum Continuous RMS Output Current. . . . . . . . . . . . . 1.6A
OUT1, OUT2, OUT3, OUT4, OUT5
Maximum Continuous Output Current . . . . . . . . . . . . . . . . ±75mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curve
Operating Ambient Temperature . . . . . . . . . . . . . . .-40°C to +105°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T_J = T_C = T_A
Electrical Specifications V_IN = 3V, V_BOOST = V_SUP = 12V, V_SRC = 20V, limits over -40°C to +105°C temperature range, unless
otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX UNIT
SUPPLY
V_IN
V_LOR
V_LOF
I_S
I_SS
T_FD
V_REF
Input Supply Range
Undervoltage Lockout Threshold
Undervoltage Lockout Threshold
Quiescent Current
V_IN rising
V_IN falling
LX not switching
Quiescent Current - Switching LX switching
Fault Delay Time
Reference Voltage
C_DEL = 100nF
T_A = +25°C
2.6
2.4
2.2
1.19
1.187
2.5
2.3
9.5
23
1.215
1.215
5.5
V
2.6
V
2.4
V
2.5
mA
15
mA
ms
1.235
V
1.238
V
SHUTDN
Thermal Shutdown Temperature
140
°C
MAIN BOOST REGULATOR
V_BOOST
F_OSC
D_CM
V_FBB
Output Voltage Range
Oscillator Frequency
Maximum Duty Cycle
Boost Feedback Voltage
T_A = +25°C
V_IN + 15%
1050
82
1.192
1.188
1200
85
1.205
1.205
18
V
1350 kHz
%
1.218
V
1.222
V
V_FTB
FB Fault Trip Level
ΔV_BOOST/ΔI_BOOST Load Regulation
ΔV_BOOST/ΔV_IN
Line Regulation
I_FB
Input Bias Current
gmV
FB Transconductance
Falling edge
50mA < I_LOAD < 250mA
V_IN = 2.6V to 5.5V
V_FB = 1.35V
dI = ±2.5µA at COMP, FB = COMP
0.85
0.925 1.020
V
0.1
%
0.08
%/V
500
nA
160
µA/V
r_ONLX
I_LEAKLX
I_LIMLX
t_SSB
LX ON-Resistance
LX Leakage Current
LX Current Limit
Soft-Start Period
V_FB = 1.35V, V_LX = 13V
Duty cycle = 65%
C_DEL = 100nF
160
mΩ
0.02
40
µA
3.0
A
7
ms
3
FN6386.3
December 23, 2013