MAX8785AETI+T Maxim Integrated Products, MAX8785AETI+T Datasheet - Page 2

• Manufacturer Part Number: MAX8785AETI+T
• Description: IC CCFL CTRL 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: CCFL Controllerr

Specifications of MAX8785AETI+T

• Current - Supply: 1.5mA
• Voltage - Supply: 4.5 V ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Frequency: -
• Lead Free Status / Rohs Status: Details

ABSOLUTE MAXIMUM RATINGS
BATT, RATE, LX1, LX2 to GND .............................-0.3V to +30V
BST1, BST2 to GND ...............................................-0.3V to +36V
BST1 to V
BST1 to LX1..............................................................-0.3V to +6V
BST2 to LX2..............................................................-0.3V to +6V
V
GH1 to LX...............................................-0.3V to (VBST1 + 0.3V)
GH2 to LX2.............................................-0.3V to (VBST2 + 0.3V)
GL1 to GND ..............................................-0.3V to (V
GL2 to GND ..............................................-0.3V to (V
Full-Bridge Controller for
Piezoelectric Transformers
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
are at T
2
BATT Input Voltage Range
BATT Quiescent Current
BATT Quiescent Current, Shutdown
V
V
V
V
GH1, GH2, GL1, and GL2
On-Resistance, Low State
GH1, GH2, GL1, and GL2
On-Resistance, High State
BST1, BST2 Leakage Current
LX1, LX2 Leakage Current
Minimum On-Time
Duty Cycle
Maximum Duty Cycle
Current-Limit Threshold
Current-Limit Leading-Edge Blanking
IFB Regulation Point
IFB Input Bias Current
CC
BATT
FLT to GND...........................................................-0.3V to +6V
CC
CC
CC
CC
, V
_______________________________________________________________________________________
Output Voltage, Normal Operation
Output Voltage, Shutdown
Undervoltage-Lockout Threshold
Undervoltage-Lockout Hysteresis
DD1
= 12V, V
A
DD1
= +25°C.)
, V
DD2
, BST2 to V
DD1
, CNTL, LSYNC, SHDN,
PARAMETER
= V
DD2
DD2
= V
..................................-0.3V to +30V
SHDN
= 5.35V, R
RATE
V
V
V
V
6V < V
V
V
V
I
I
V
= 19V, V
V
V
V
V
V
V
LX1 - PGND, LX2 - PGND
0 < V
-3V < V
TEST
TEST
CC
CC
BATT
SHDN
SHDN
CC
CC
BST1
BATT
BATT
BATT
BATT
BATT
BATT
DD1
DD2
= 190kΩ, T
= V
= V
rising (leaving lockout)
falling (entering lockout)
IFB
= 10mA
= 10mA
= 28V
BATT
= 24V, V
= 28V
= 8V, R
= 16V, R
= 24V, R
= 12V, R
= 12V, R
+ 0.3V)
+ 0.3V)
= 0, V
= 0, no load
IFB
DD1
DD1
BATT
< +3V
< 0
< 28V, 0 < I
= V
= V
BATT
= 28V
RATE
A
LX1
RATE
RATE
RATE
RATE
CONDITIONS
DD2
DD2
= 0°C to +85°C, unless otherwise noted. See Figure 1. Typical values
= 28V
= 19V; V
= 190kΩ, R
COMP, HF, LF, PCOMP, SEL,
IFB, VFB, OLF to GND.................................................-6V to +6V
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
= open
= BATT
= 190kΩ, R
= 190kΩ, R
= 150kΩ, R
= 300kΩ, R
TFLT to GND............................................-0.3V to (V
28-Pin Thin QFN (derate 21.3mW/°C above +70°C)...1702.1mW
LOAD
BST2
< 20mA
HF
HF
HF
HF
HF
= 24V, V
= 100kΩ
= 100kΩ
= 100kΩ
= 100kΩ
= 100kΩ
LX2
5.20
10.8
-225
MIN
240
370
240
760
5.5
4.5
3.5
4.0
7.5
22
-2
A
= +70°C)
12.50
TYP
5.35
150
370
400
370
800
1.5
4.6
8.5
10
25
14
25
1
4
MAX
28.0
5.50
14.2
500
430
500
840
5.5
5.5
4.5
9.5
+2
25
28
45
6
3
8
5
5
CC
UNITS
+ 0.3V)
mA
mV
mV
mV
µA
µA
µA
µA
ns
ns
%
%
Ω
Ω
V
V
V
V