MAX8607 datasheet(2/10 Pages) MAXIM

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1MHz PWM Boost Converter for 1.5A

White LED Camera Flash

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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.

OUT, OUTS, EN1, EN2 to GND ................................-0.3V to +6V

FLSH, MOV, LED, COMP, LX to GND ....-0.3V to (VOUTS + 0.3V)

LGND, PGND to GND. ..........................................-0.3V to +0.3V

LX Current. ........................................................................2ARMS

Continuous Power Dissipation (TA = +70°C)

14-Pin TDFN 3mm x 3mm (derate 18.2mW/°C

above +70°C)..............................................................1455mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VEN1 = VEN2 = 5V, VOUT = VOUTS = 4V, COUT = 10µF, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise

noted.) (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

IC supplied from OUTS

2.7

5.5

Undervoltage-Lockout

Threshold

VOUTS rising, 100mV (typ) hysteresis

2.25

2.38

2.65

OUT Quiescent Current, Flash or Movie Mode

LX switching, ILED = 0mA

TA = +25°C

0.1

OUT Quiescent Current, Shutdown Mode

EN1 = EN2 = GND

TA = +85°C

µA

Overvoltage limit, ILED = 0mA, VLED = 0V

5.3

5.5

5.7

VLED = 0.5V

3.65

3.85

3.95

OUT Regulation Voltage

Disco mode, ILED = 80mA

4.8

5.0

5.2

TA = +25°C

0.01

LED Current, Shutdown Mode

EN1 = EN2 = GND

TA = +85°C

0.5

µA

Flash mode

1200

1500

Movie mode

338

360

Current-Source Guaranteed Sink Current

RMOV = 2k

Ω,

RFLSH = 2k

Ω,

VLED = 0.5V

Disco mode

Current-Source Multiplier in MOV Mode

(ILED / IMOV)

IMOV up to 300µA

1200

A/A

≥ 0°C (Note 2)

-3

±0.5

Current-Source Accuracy in MOV Mode

RMOV = 2k

Ω,

VLED = 0.5V

TA = -40°C

-6

±0.5

MOV Current-Source Dropout Voltage

RMOV = 2k

Ω

100

Disco Current-Source Current Setting

VEN1 = 0V, VEN2 = 5V

108

Current-Source Multiplier in FLSH Mode

(ILED / IFLSH)

IFLSH up to 300µA

5000

A/A

Current-Source Accuracy in FLSH Mode

RFLSH = 2k

Ω, VLED = 0.5V, TA ≥ -40°C

(Note 2)

±3

FLSH Current-Source Dropout Voltage

RFLSH = 2k

Ω

200

420

LX n-Channel Current Limit

4.4

MOV Regulation Voltage

600

FLSH Regulation Voltage

600

LED to COMP Transconductance

VCOMP = 1.5V

µS

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