ADM1041AARQZ Просмотр технического описания (PDF) - Analog Devices

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ADM1041AARQZ

Secondary-Side Controller with Current Share and Housekeeping

Analog Devices 

ADM1041A

SPECIFICATIONS

TA = –40 to +85°C, VDD = 5 V ± 10%, unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

SUPPLIES

VDD

4.5

5.0

5.5

V

IDD, Current Consumption

Peak IDD, during EEPROM Erase Cycle1, 2

6

10

mA

40

mA

UNDERVOLTAGE LOCKOUT, VDD

Start-Up Threshold

4

4.3

4.5

V

Stop Threshold

3.7

4

4.2

V

Hysteresis

0.3

V

POWER BLOCK PROTECTION

VDD Overvoltage

5.8

6.2

6.5

V

VDD Overvoltage Debounce

300

500

700

μs

Open Ground

0.1

0.2

0.35

V

VDDOK Debounce

250

400

500

μs

POWER-ON RESET

DC Level

1.5

2.2

2.75

V

DIFFERENTIAL LOAD VOLTAGE SENSE INPUT,

(VS−, VS+)

VS− Input Voltage

0.5

V

VS+ Input Voltage

VDD – 2

V

VS− Input Resistance

35

kΩ

VS+ Input Resistance

500

kΩ

VNOM Adjustment Range

1.7 to 2.3

V

Set Load Voltage Trim Step

0.10 to 0.14

%

1.74 to 3.18

mV

Set Load Overvoltage Trim Range

Set Load Overvoltage Trim Step

105 to 120

%

0.09

%

1.6

mV

Recover from Load OV False to FG True

100

μs

200

μs

300

μs

400

μs

Operate Time from Load OV to FG False

2

μs

Test Conditions/Comments

See Figure 9.

Latching

VGND positive with respect to VS−

VDDOK

VDD rising

See Figure 6. VNOM = (VS+ – VS−); VNOM

is typically 2 V

Voltage on Pin 20

Voltage on Pin 21

1.7 V ≤ VNOM ≤ 2.3 V typ

8 bits, 255 steps

Reg 19h[7:0]. See Table 34

1.7 V ≤ VNOM ≤ 2.3 V min

8 bits, 255 step/s

Reg 08h[7:0]. See Table 17.

VS+ = 2.24 V

Reg 03h[1:0] = 00. See Table 12.

Reg 03h[1:0] = 01. See Table 12.

Reg 03h[1:0] = 10. See Table 12.

Reg 03h[1:0] = 11. See Table 12.

Rev. 0 | Page 6 of 56

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