ISL78419ARZ-T Datasheet, PDF (5/20 Pages) Intersil Corporation – Integrated Automotive TFT-LCD Power Supply Regulator

ISL78419
Absolute Maximum Ratings
RE, VGHM, GPM_LO and VGH to GND . . . . . . . . . . . . . . . . . . . . -0.3 to +36V
LX, AVDD, POS, NEG, VOUT to GND . . . . . . . . . . . . . . . . . . . . . -0.3 to +18V
Voltage Between GND and PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5V
All Other Pins to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0V
ESD Rating
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 2kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . 200V
Charged Device Model (Tested per JESD22-C101). . . . . . . . . . . . . . . 1kV
Latch Up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
θ_JA (°C/W) θ_JC (°C/W)
28 Ld 4x5 QFN Package (Notes 4, 5). . . . .
38
4.5
Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Functional Junction Temperature . . . . . . . . . . . . . . . . . . . .-40°C to +150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature During Soldering . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
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.
NOTES:
4. θ_JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications V_IN = ENABLE = 3.3V, A_VDD = 8V, V_LDO = 2.5V, V_ON = 24V, V_OFF = - 6V. Boldface limits apply over the
operating temperature range, -40°C to +105°C.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 6)
TYP
(Note 7)
MAX
(Note 6) UNITS
GENERAL
VIN
V_IN Supply Voltage Range
2.5
3.3
5.5
V
I_{S_DIS}
V_IN Supply Currents when Disabled
V_IN < UVLO
390
500
µA
I_S
V_IN Supply Currents
ENABLE = 3.3V, overdrive AVDD and VGH
0.7
1.0
mA
I_ENABLE ENABLE Pin Current
ENABLE = 0V
0
µA
LOGIC INPUT CHARACTERISTICS - ENABLE, FLK, SCL, SDA, FREQ
V_IL
Low Voltage Threshold
V_IH
High Voltage Threshold
R_IL
Pull-Down Resistor
INTERNAL OSCILLATOR
Enable, FLK, FREQ
1.75
0.85
1.25
0.65
V
V
1.65 MΩ
F_OSC
Switching Frequencies
AVDD BOOST REGULATOR
FREQ = low, T_A = +25°C
FREQ = high, T_A = +25°C
550
1100
600
1200
650 kHz
1300 kHz
DAVDD/
DIOUT
AVDD Load Regulation
50mA < I_LOAD < 250mA
0.2
%
DAVDD/
DVIN
AVDD Line Regulation
I_LOAD = 150mA, 2.5V < V_IN < 5.5V
0.15
%
V_FB
I_FB
r_DS(ON)
I_LIM
D_MAX
EFF
Feedback Voltage (V_FB)
FB Input Bias Current
Switch ON-resistance
Switch Current Limit
Max Duty Cycle
I_LOAD = 100mA, T_A = +25°C
T_A = +25°C
Freq = 1.2MHz
Freq = 1.2MHz, IAVDD = 100mA
0.792
0.8
0.808 V
100
nA
180
260 mΩ
1.125
1.5
1.875 A
80
90
%
91
%
5
FN8292.2
January 24, 2014