Datasheet

MAX8630W/MAX8630X
125mA 1x/1.5x Charge Pumps for 5 White LEDs
in 3mm x 3mm TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.6V, V
GND
= 0V, EN_ (PWM) = IN, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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, OUT to GND.....................................................-0.3V to +6.0V
C1N, C2N, ENM, CPWM, ENS,
PWM to GND ............................................-0.3V to (V
IN
+ 0.3V)
LED_ to GND ............................................-0.3V to (V
OUT
+ 0.3V)
C1P, C2P to GND ...-0.3V to greater of (V
OUT
+ 1V) or (V
IN
+ 1V)
OUT Short Circuit to GND ..........................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
14-Pin TDFN 3mm x 3mm
(derate 18.2mW/°C above +70°C).............................1454mW
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
IN Operating Voltage 2.7 5.5 V
Undervoltage-Lockout Threshold
V
IN
rising or falling
2.20 2.45 2.65
V
Undervoltage-Lockout Hysteresis
100
mV
Output Overvoltage Protection
Threshold
V
OUT
rising, any LED_ = GND 5 V
1/32nd setting, 1.5x mode 1.4
No-Load Supply Current
1/32nd setting, 1x mode
0.35
mA
T
A
= +25°C 0.01
2
Shutdown Supply Current ENM = ENS (PWM) = GND
T
A
= +85°C
0.1
µA
Soft-Start Time (t
SOFT-START
) 2ms
MAX8630_ETD15 15
MAX8630_ETD18 18
MAX8630_ETD20 20
Full-Scale LED Current
MAX8630_ETD25 25
mA
T
A
= +25°C -1
±0.3
+1
Full-Scale LED Current Accuracy
T
A
= -40°C to derating function start temperature
-3.5 ±0.3 +3.5
%
Derating Function Start
Temperature
40 °C
Derating Function Slope T
A
= +40°C to +85°C
-1.67
%/°C
LED_ Dropout Voltage 100% LED setting (Note 2) 40 75 mV
1x to 1.5x Mode Transition
Threshold
V
LED_
falling 88 mV
Input Voltage Mode Transition
Hysteresis
70 mV
1.5x Mode Regulation Voltage Minimum of V
LED_
122
mV
OUT Pulldown Resistance in
Shutdown
ENM = ENS (PWM) = GND 5 kΩ