On Semiconductor CAT3637 Evaluation Board CAT3637AEVB CAT3637AEVB Data Sheet

(over recommended operating conditions unless specified otherwise) V

IN

 = 3.6 V, EN = High, T

AMB

 = 25°C

I

Q

Quiescent Current

1x mode, V

IN

 = 4.2 V

1.33x mode, V

IN

 = 3.3 V

1.5x mode, V

IN

 = 2.8 V

2x mode, V

IN

 = 2.5 V

1.5
2.8
3.7
3.8

mA

I

QSHDN

Shutdown Current

V

EN

 = 0 V

1

mA

I

LED−ACC

LED Current Accuracy

2 mA ≤ I

LED

 ≤ 30 mA

±3

%

I

LED−DEV

LED Channel Matching

I

LED

* I

LEDAVG

I

LEDAVG

±1

%

R

OUT

Output Resistance (open loop)

1x mode, I

OUT

 = 120 mA

1.33x mode, I

OUT

 = 120 mA

1.5x mode, I

OUT

 = 120 mA

2x mode, I

OUT

 = 120 mA

0.5
3.5
3.5

6

W

F

OSC

Charge Pump Frequency

1.33x and 2x mode
1.5x mode

0.6
0.8

0.8
1.1

1.1
1.4

MHz

I

SC_MAX

Output short circuit Current Limit

V

OUT

 < 0.5 V

80

mA

LED

TH

1x to 1.33x or 1.33x to 1.5x or
1.5x to 2x Transition Thresholds at any LEDx pin

150

mV

V

HYS

1.33x to 1x Transition Hysteresis

V

IN

 − Highest LED V

F

400

mV

T

DF

Mode Transition Filter Delay

120

ms

I

IN_MAX

Input Current Limit

V

OUT

 > 1 V

450

mA

R

EN/DIM

V

HI

V

LO

EN/DIM Pin

− Internal Pull−down Resistor
− Logic High Level
− Logic Low Level

1.3

100

0.4

kW

V
V

T

SD

Thermal Shutdown

150

°C

T

HYS

Thermal Hysteresis

20

°C

V

UVLO

Undervoltage lockout (UVLO) threshold

2

V

NOTE: Typical application circuit with external components is shown on page 2.