Datasheet > ADP1655

ADP1655

更新时间： 2022-05-26 01:02:02

品牌	Logo	应用领域
亚德诺 - ADI		驱动器闪光灯
页数	文件大小	规格书
24页	664K
描述
Dual LED Flash Driver with I2C-Compatible Interface

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ADP1655 数据手册

ADP1655

SPECIFICATIONS

V_IN= 3.6 V, T_J= −40°C to +125°C for minimum/maximum specifications and T_A= 25°C for typical specifications, unless

otherwise noted.

Table 1.

Parameter¹

Conditions

Min Typ Max Unit

SUPPLY

Input Voltage Range

Undervoltage Lockout Threshold

Hysteresis

2.7

2.3

5.5

2.5

100 150

V_INfalling

2.4

Shutdown Current

Standby Current

T_J= −40°C to +85°C, current into VIN pin, V_IN= 2.7 V to 4.5 V

0.3

μA

I2C/EN = SCL/EN1 = SDA/EN2 = 1.8 V

Operating Quiescent Current

SW Switch Leakage

INPUTS

Torch mode, two LEDs, LED current = 40 mA

T_J= −40°C to +85°C

5.3

μA

Input Logic Low Voltage

Input Logic High Voltage

TORCH, STROBE, TX_MASK Pull-Down

SCL/EN1, SDA/EN2 Pull-Down

TORCH Glitch Filtering Delay

LED DRIVER

0.54

kΩ

1.26

6.3

350

I2C/EN = 0 V

From TORCH rising edge to device start

11.7 ms

LED Current

Assist Light, Torch

I2C/EN = 0, one LED

I2C/EN = 0, two LEDs

I2C/EN = 1, assist light value setting = 0 (000 binary)

I2C/EN = 1, assist light value setting = 7 (111 binary)

I2C/EN = 0, one LED

I2C/EN = 0, two LEDs

I2C/EN = 1, flash value setting = 0 (0000 binary)

I2C/EN = 1, one LED, flash value setting = 15 (1111 binary)

I2C/EN = 1, two LEDs, flash value setting = 10 to 15 (1010 to

1111 binary)

160

500

320

200

500

400

Flash

LED Current Accuracy

I_LED= 320 mA to 500 mA

I_LED= 60 mA to 320 mA

I_LED= 20 mA to 60 mA

Flash typical, 400 mA LED current

Torch 160 mA

−5

+10

+20

LED Current Source Headroom²

290

190

LED_OUT Ramp-Up Time

LED_OUT Ramp-Down Time

Maximum Timeout For Flash

Timer Accuracy

0.5

850

−7.5

1.85

+7.5

SWITCHING REGULATOR

Switching Frequency

Minimum Duty Cycle

N-FET Resistance

2.15 MHz

9.0

135

290

mΩ

P-FET Resistance

Rev. 0 | Page 3 of 24

1 234 5 6 7...24

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