Datasheet > CAT3637

CAT3637

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
CATALYST		驱动器
页数	文件大小	规格书
14页	284K
描述
6-Channel Programmable High Efficiency Quad-Mode⑩ LED Driver

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CAT3637 数据手册

CAT3637

ABSOLUTE MAXIMUM RATINGS

Parameter

Rating

Unit

VIN, LEDx, C1±, C2± voltage

VOUT Voltage

EN/SET Voltage

VIN + 0.7V

-65 to +160

-40 to +150

300

Storage Temperature Range

Junction Temperature Range⁽¹⁾

Lead Temperature

°C

RECOMMENDED OPERATING CONDITIONS

Parameter

Range

Unit

VIN

2.5 to 5.5

-40 to +85

0 to 30

Ambient Temperature Range⁽¹⁾

I_LEDper LED pin

°C

Total Output Current

0 to 180

ELECTRICAL OPERATING CHARACTERISTICS

(over recommended operating conditions unless specified otherwise) V_IN= 3.6V, EN = High, T_AMB= 25°C

Symbol Name

Conditions

Min

Typ

Max Units

1x mode, V_IN= 4.2V

1.33 x mode, V_IN= 3.3V

1.5x mode, V_IN= 2.8V

2x mode, V_IN= 2.5V

1.5

2.8

3.7

3.8

I_Q

Quiescent Current

I_QSHDN

Shutdown Current

V_EN= 0V

µA

I_LED-ACCLED Current Accuracy

2mA ≤ I_LED≤ 30mA

I_LED−I_LEDAVG

I_LED

±3

±1

I_LED-DEVLED Channel Matching

1x mode, I_OUT= 120mA

1.33x mode, I_OUT= 120mA

1.5x mode, I_OUT= 120mA

2x mode, I_OUT= 120mA

0.5

3.5

Ω

R_OUT

Output Resistance (open loop)

Charge Pump Frequency

1.33x and 2x mode

1.5x mode

0.6

0.8

1.1

1.4

MHz

F_OSC

I_{SC_MAX}Output short circuit Current Limit

1x to 1.33x or 1.33x to 1.5x or

LED_TH1.5x to 2x Transition Thresholds at

any LEDx pin

V_OUT< 0.5V

150

V_HYS

T_DF

I_{IN_MAX}

1.33x to 1x Transition Hysteresis

Mode Transition Filter Delay

Input Current Limit

V_IN- Highest LED V_F

V_OUT> 1V

400

120

450

µs

EN/DIM Pin

• Internal Pull-down Resistor

• Logic High Level

• Logic Low Level

R_EN/DIM

V_HI

V_LO

100

kΩ

1.3

0.4

T_SD

T_HYS

V_UVLO

Thermal Shutdown

Thermal Hysteresis

Undervoltage lockout (UVLO) threshold

150

°C

Typical application circuit with external components is shown on page 1.

Notes:

(1) Package thermal resistance is below 50°C/W when mounted on FR4 board.

Doc. No. MD-5033 Rev. A

Characteristics subject to change without notice

123 4 5 6 7...14

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