NCP5680MUTXG【PDF 7/27 页】IC LED DRIVER WHT HI EFF 24-UQFN

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NCP5680

POWER SUPPLY SECTION: (Typical values are referenced to T A = +25 ° C, Min & Max values are referenced ? 40 ° C to +85 ° C ambient

temperature, unless otherwise noted), operating conditions 2.85 V < V bat < 5.5 V, unless otherwise noted.

Pin

24

19

Symbol

V bat

I out

Rating

Power Supply

Continuous DC Current in the Load @ 3.0 V < V bat < 3.2 V (Note 12)

Min

2.7

Typ

Max

5.5

220

Unit

V

mA

Continuous DC Current in the Load @ 3.6 V < V bat < 5.5 V (Note 12)

400

19

I scL

I scH

Continuous Output Short Circuit Current

50

100

mA

19

19

24

24

7, 11

V out

Tcy

I stdb

I op

I FTOL

Output Voltage Regulation (4.5 V < V out < 5.3 V) (See Table 5)

DC/DC Re ? Cycling Time (Cout = 0.50 Farad), V bat = 4.2 V, I ICH = 500

mA. From the end of the previous flash to the full load operation

Stand By Current, V bat = 3.6 V, I out = 0 mA, DC/DC = Off, V bias = Off

Operating Current, @ I out = 0 mA, V bat = 3.6 V following a reset state

Power Flash Output Current Tolerance: ? 25 ° C < T A < 85 ° C (Note 8)

? 100

2

0.6

+100

1.0

mV

s

m A

mA

%

@V bat = 3.8 V, I LED ≥ 500 mA (See Figure 10)

? 5

+5

9, 10

10

I TTOL

I IND

Torch Output Current Tolerance

I Torch @ Vds1 (Note 10)

I Torch @ Vds2 (Note 10)

Indicator LED Current

? Indicator Mode @ Vds1 (Note 11)

? 15

10

10

? 25

0.1

+15

100

100

+25

6.3

%

mA

mA

%

mA

Fpwr

Clock Operating Frequency @ T A = 25 ° C

0.85

1.0

1.15

MHz

7. The external shunt resistor shall be ± 1% tolerance or better

8. The external sense resistor shall be ± 1% tolerance or better

9. The maximum LED current depends upon the external NMOS device

10. The Vgs1 and Vgs2 pins are deactivated when the Torch mode is operating

11. The Vgs1 and Vgs2 pins are deactivated when the Indicator mode is operating

12. Parameter characterized, not tested in production, guaranteed by design.

PROGRAMMABLE AND POWER UP PRESET CONDITION SECTION

Pin

19

7, 11

7, 11

7, 11

Symbol

I ICH

I FLSH

Tpfl

Tout

Rating

Programmable SuperCAP Re ? Charge Current Range

A ± 8% tolerance applies to each step of the five steps (Note 7)

Programmable Flash Output Current Range (Note 8) See Figure 10

Programmable Power Flash Width Range

Automatically Preset Power Flash Security Time Out @ Power Up

Min

100

0.4

0.01

Typ

50

Max

500

6.3

255

Unit

mA

A

ms

ms

ANALOG SECTION: (Typical values are referenced to T A = +25 ° C, Min & Max values are referenced ? 40 ° C to +85 ° C ambient

temperature, unless otherwise noted), operating conditions 2.85 V < V bat < 5.5 V, unless otherwise noted.

Pin

Symbol

Rating

Min

Typ

Max

Unit

14

1

2

6

I bias

V VSD

V PHSEN

V NTC

Super Cap Bias Voltage Current Capability (V bias = V CC /2)

Photo Sense Supply @ Iph = 2 mA

Input Photo Sense Voltage

Input Negative Coefficient Sensor Voltage (See NTCREG Register)

1.0

2.5

1.7

2.0

mA

V

V

V

2

5

V MSK

R TRG

Input Synchronization Transmit Mask

Internal Pull ? Down Resistor

2.1

100

2.5

V

k W

7, 11

V iref

Input Voltage to Current Conversion across the Shunt Resistor during a

Flash Sequence @ R sense = 0.1 W (Notes 12 and 13)

95

100

105

mV/A

T SD

T SDh

Thermal Shutdown

Thermal Shutdown Hysteresis

145

20

° C

° C

13. The overall output current tolerance depends upon the accuracy of the external resistor. Using 1% or better resistor is recommended.

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