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MAX8630X

125mA 1x/1.5x Charge Pumps for 5 White LEDs in 3mm x 3mm TDFN

Maxim Integrated 

125mA 1x/1.5x Charge Pumps for 5 White LEDs

in 3mm x 3mm TDFN

ABSOLUTE MAXIMUM RATINGS

IN, OUT to GND.....................................................-0.3V to +6.0V

C1N, C2N, ENM, CPWM, ENS,

PWM to GND ............................................-0.3V to (VIN + 0.3V)

LED_ to GND ............................................-0.3V to (VOUT + 0.3V)

C1P, C2P to GND ...-0.3V to greater of (VOUT + 1V) or (VIN + 1V)

OUT Short Circuit to GND ..........................................Continuous

Continuous Power Dissipation (TA = +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

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

(VIN = 3.6V, VGND = 0V, EN_ (PWM) = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

IN Operating Voltage

Undervoltage-Lockout Threshold

Undervoltage-Lockout Hysteresis

VIN rising or falling

CONDITIONS

MIN TYP MAX UNITS

2.7

5.5

V

2.20 2.45 2.65

V

100

mV

Output Overvoltage Protection

Threshold

VOUT rising, any LED_ = GND

5

V

No-Load Supply Current

1/32nd setting, 1.5x mode

1/32nd setting, 1x mode

1.4

mA

0.35

Shutdown Supply Current

ENM = ENS (PWM) = GND

TA = +25°C

TA = +85°C

0.01

2

µA

0.1

Soft-Start Time (tSOFT-START)

2

ms

MAX8630_ETD15

15

Full-Scale LED Current

MAX8630_ETD18

MAX8630_ETD20

18

mA

20

MAX8630_ETD25

25

Full-Scale LED Current Accuracy TA = +25°C

TA = -40°C to derating function start temperature

-1

±0.3

+1

%

-3.5 ±0.3 +3.5

Derating Function Start

Temperature

40

°C

Derating Function Slope

LED_ Dropout Voltage

TA = +40°C to +85°C

100% LED setting (Note 2)

-1.67

%/°C

40

75

mV

1x to 1.5x Mode Transition

Threshold

VLED_ falling

88

mV

Input Voltage Mode Transition

Hysteresis

70

mV

1.5x Mode Regulation Voltage

OUT Pulldown Resistance in

Shutdown

Minimum of VLED_

ENM = ENS (PWM) = GND

122

mV

5

kΩ

2 _______________________________________________________________________________________

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