ISL97801ARZ-TK Intersil, ISL97801ARZ-TK Datasheet - Page 3

• Manufacturer Part Number: ISL97801ARZ-TK
• Description: IC LED DRIVER AUTOMOTIVE 20-QFN
• Manufacturer: Intersil
• Type: Automotiver

Specifications of ISL97801ARZ-TK

• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Frequency: 850kHz ~ 1.15MHz
• Voltage - Supply: 2.7 V ~ 16 V
• Voltage - Output: 32V
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Operating Temperature: -40°C ~ 105°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL97801ARZ-TK

Electrical Specifications
.
PARAMETER
RLS
V
RLS
FB
FB
VEN/PWM
VEN/PWM
FAULTPUMP
V
Rschottky
Don’t Care
f
V
dis
T
T
t
V
V
en
dis
DIMMING
en
V
SWITCH
t
V
OV FAULT
t
DCUVLO
UV FAULT
COMPP
COMPN
DELAY
MODEH
T
MODE
FAULT
BOOST
MODEL
T
LEVEL
DRIVERH
DRIVERL
BUCK
f
FAULT
FAULT
TEMP
TRIP
TEMP
HYS
SW
1
0
L
H
Light Control Voltage Linear Input Range Mode = 1, analog control of LED current
Feedback Undervoltage Fault
Feedback Overvoltage Fault
Switching Frequency
Maximum Recommended PWM
Dimming Frequency
Load Switch Transition Time
Load Switch Driver Impedance Low
Load Switch Driver Impedance High
Fault Timer Period
Start-up Delay
Fault Pin Charge Pump
Boost Mode Threshold
Buck Mode Threshold
Mode Low Threshold
Mode High Threshold
Input Level Applied to TMAX Pin to
Enable Fault Protection
Input Level Applied to TMAX Pin to
Disable Fault Protection
Input Level Applied to TEMP Pin to
Enable Temperature Compensation
Input Level Applied to TEMP Pin to
Disable Temperature Compensation
VFB Positive Temperature
Compensation; VFB/VFBnom
VFB Negative Temperature
Compensation; VFB/VFBnom
Internal Temperature Protection
Threshold
Internal Temperature Protection
Hysteresis
EN/PWM Pin Input Low Threshold
EN/PWM Pin Input High Threshold
V
Internal Schottky Diode for Buck
(VDC - 0.25) > V > 0.25V Standard Mode light level to PWM modulation of EN/PWM input; LED bias current determined by
DC
Under Voltage Lockout
V < (VDC - 0.25)
V < 0.25V
TEMP
DESCRIPTION
3
V
BAT
= V
IN
LEVEL voltage, nominal 1V
Disable temperature compensation
Fixed Bias Mode V
TABLE 1. LIGHT OUTPUT CONTROL, V
= 12V, V
DC
= 5V, T
Mode = 1, modulation signal applied to
EN/PWM
C
EN/PWM = 0
EN/PWM = 3V
V
BUCK/BOOSTN = GND
BUCK/BOOSTN = V
MODE = V
VTEMP/VDC = 0.80
VTEMP/VDC = 0.20
VLEVEL = 1V, EN/PWM = 3V
VLEVEL = 1V, EN/PWM = 3V
Timed LX switching delay
MODE = GND
BAT
GATE
ISL97801
FB
= V
A
= 2nF
= -40°C to +105°C unless otherwise specified. (Continued)
level internally set to 0.4V, independent of V
IN
DC
= 3V
CONDITIONS
DC
OPERATING MODE
DC
= 5.0V
0.94V
0.96V
2/3V
0.25
0.85
MIN
120
220
850
0.5
2.5
40
6
DC
DC
DC
LEVEL
1000
TYP
1.26
0.74
160
250
100
135
15
10
30
30
50
25
1
0.4V
1/3V
0.9V
MAX
1150
1.17
0.08
180
280
1.2
2.6
50
50
58
23
3
DC
DC
DC
April 2, 2007
FN6428.1
UNIT
kHz
kHz
mV
mV
ms
ms
ns
°C
°C
V
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
V
V