Owner manual

MAX8614A/MAX8614B
Dual-Output (+ and -) DC-DC
Converters for CCD
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V
CC
, AV
CC
to GND...................................................-0.3V to +6V
LXN to V
CC
.............................................................
-18V to +0.3V
LXP to PGND ..........................................................-0.3V to +33V
REF, ONINV, ONBST, SEQ, FBN, FBP
FLT to GND ..........................................-0.3V to (AV
CC
+ 0.3)V
PVP to GND................................................-0.3V to (V
CC
+ 0.3)V
AV
CC
to V
CC
..........................................................-0.3V to +0.3V
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T
A
= +70°C Multilayer Board)
14-Pin 3mm x 3mm TDFN (derate 18.2mW/°C above
T
A
= +70°C) ............................................................1454.4mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
CC
= V
AVCC
= V
ONINV =
V
ONBST
= 3.6V, PGND = SEQ = GND, C6 = 0.22µF, C1 = 2.2µF, C2 = 4.7µF, Figure 1, T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
AV
CC
and V
CC
Voltage Range (Note 1) 2.7 5.5 V
UVLO Threshold V
CC
rising 2.42 2.55 2.66 V
UVLO Hysteresis 25 mV
Step-Up Output Voltage Adjust Range V
AVCC
24 V
Inverter Output Voltage Adjust Range V
INV
- V
CC
(Note 2) -16 0 V
MAX8614B 0.7 0.8 0.9
LXP Current Limit
MAX8614A 0.34 0.44 0.52
A
MAX8614B 0.90 1.05 1.20
LXP Short-Circuit Current Limit
MAX8614A 0.52 0.61 0.70
A
MAX8614B 0.65 0.75 0.85
LXN Current Limit
MAX8614A 0.28 0.33 0.38
A
LXN On-Resistance V
CC
= 3.6V 0.6 1.1 Ω
LXP On-Resistance V
CC
= 3.6V 0.625 Ω
PVP On-Resistance V
CC
= 3.6V 0.15 0.3 Ω
Maximum Duty Cycle Step-up and inverter 82 90 %
I
AVCC
0.75 1.4
Quiescent Current (Switching, No Load)
I
VCC
23
mA
I
AVCC
400 800
Quiescent Current (No Switching, No Load)
I
V
CC
815
µA
T
A
= +25°C 0.1 5
Shutdown Supply Current
T
A
= +85°C 0.1
µA
FBP Line Regulation V
CC
= 2.7V to 5.5V -20 mV/D
FBN Line Regulation V
CC
= 2.7V to 5.5V 20
mV/
(D - 0.5)