MAX8520 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX8520

Smallest TEC Power Drivers for Optical Modules

Maxim Integrated 

Smallest TEC Power Drivers for Optical

Modules

ELECTRICAL CHARACTERISTICS (continued)

(VDD = VPVDD1 = VPVDD2 = VSHDN = 5V, 1MHz mode (Note 3). PGND1 = PGND2 = GND, CTLI = MAXV = MAXIP = MAXIN = REF,

TA = 0°C to +85°C, unless otherwise noted. Typical values at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Internal Oscillator Switching

Frequency

External Sync Frequency Range

fSW-INT

MAX8521, FREQ = VDD, VDD = 3V to 5V

MAX8521, FREQ = 0, VDD = 3V to 5V

MAX8520, REXT = 60kΩ, VDD = 5V

MAX8520, REXT = 60kΩ, VDD = 3V

MAX8520, REXT = 150kΩ, VDD = 5V

MAX8520, REXT = 150kΩ, VDD = 3V

25% < duty cycle <75% (MAX8521 only)

0.8

1.0

1.2

0.4

0.5

0.6

0.8

1.0

1.2

MHz

0.76 0.93 1.10

0.4

0.5

0.6

0.36 0.46 0.56

0.7

1.2

MHz

LX_ Duty Cycle

(Note 5)

0

100

%

OS1, OS2, CS Input Current

IOS1, IOS2,

ICS

0 or VDD

-100

+100

µA

SHDN, FREQ Input Current

ISHDN,

IFREQ

0 or VDD, FREQ applicable for the

MAX8521 only

-5

+5

µA

SHDN, FREQ Input Low Voltage

VIL

VDD = 3V to 5.5V, FREQ applicable for the

MAX8521 only

VDD x

0.25

V

SHDN, FREQ Input High Voltage

VIH

VDD = 3V to 5.5V, FREQ applicable for the VDD x

MAX8521 only

0.75

V

MAXV Threshold Accuracy

VMAXV = VREF x 0.67, VOS1 to VOS2 = ±4V,

VDD = 5V

-2

VMAXV = VREF x 0.33, VOS1 to VOS2 = ±2V,

VDD = 3V

-3

+2

%

+3

%

MAXV, MAXI_ Input Bias Current

IMAXV-BIAS,

IMAXI_-BIAS

VMAXV = VMAXI_ = 0.1V or 1.5V

-0.1

+0.1

µA

CTLI Gain

CTLI Input Resistance

Error-Amp Transconductance

VITEC Accuracy

ACTLI

RCTLI

gm

VCTLI = 0.5V to 2.5V (Note 6)

1MΩ terminated at REF

VOS1 to VCS = ±100mV

VOS1 = VDD /2

9.5

10.0 10.5

V/V

0.5

1.0

2.0

MΩ

50

100

160

µS

-10

+10

%

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