Derating option for 2 to 8 white leds, Absolute maximum ratings, Electrical characteristics – Rainbow Electronics MAX8596Z User Manual
Page 2
MAX8595Z/MAX8596Z
High-Efficiency, 32V Step-Up Converters
with T
A
Derating Option for 2 to 8 White LEDs
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.
IN to GND .................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND .....................................................-0.3V to +37V
CTRL to GND...................-0.3V to the lower of +6V or (V
IN
+ 2V)
COMP, CS to GND ......................................-0.3V to (V
IN
+ 0.3V)
I
LX
...................................................................................1.0A
RMS
Continuous Power Dissipation (T
A
= +70°C)
8-Pin TDFN 3mm x 3mm
(derate 24.4mW/°C above +70°C) ............................ 1950mW
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
IN
= 3.0V, L = 22µH, C
IN
= 2.2µF, C
OUT
= 0.1µF, C
COMP
= 0.1µF, R
SENSE
= 13
Ω, V
CTRL
= 1.5V,
T
A
= -40°C to +85°C
, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
2.6
5.5
V
UVLO Threshold
V
IN
rising or falling
2.10
2.38
2.55
V
UVLO Hysteresis
30
mV
Quiescent Current
No switching
0.5
0.7
mA
T
A
= +25
°C
0.3
2
Shutdown Supply Current
CTRL = GND,
V
OUT
= V
IN
T
A
= +85
°C
1
µA
OVLO Threshold
V
OUT
rising
32
34
36
V
OVLO Hysteresis
2
V
V
OUT
= 32V, V
CTRL
> 0.24V
9
20
35
T
A
= +25
°C
0.01
1
OUT Input Bias Current
OUT = IN, CTRL = GND
T
A
= +85
°C
0.1
µA
Output Voltage Range
(Note 2)
V
IN
-
V
D
32
V
ERROR AMPLIFIER
T
A
= +25
°C
0.295
0.300
0.305
T
A
= 0
°C to +85°C
0.292
0.300
0.308
CTRL to CS Regulation
V
CTRL
= 1.50V,
V
IN
= 2.6V to 5.5V
T
A
= -40
°C to +85°C
0.290
0.300
0.310
V
T
A
= +25
°C
0.01
1
CS Input Bias Current
V
CS
= V
CTRL
/ 5
T
A
= +85
°C
0.03
µA
MAX8595Z, V
CTRL
= 3.0V
310
330
347
T
A
= -40
°C to +25°C
330
345
360
T
A
= +42
°C
343
CS Maximum Brightness Clamp
Voltage
MAX8596Z,
V
CTRL
= 3.0V
T
A
= +85
°C
106.5
mV
MAX8595Z
1.65
CTRL Voltage for CS Maximum
Brightness Clamp
MAX8596Z
1.72
V
CS Derating Function Start
Temperature
MAX8596Z, V
CTRL
= 3.0V
+42
°C