ADUM3472ARSZ datasheet(7/32 Pages) AD

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ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474

Rev. 0 | Page 7 of 32

ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY

4.5 V ≤ (VDD1 = VDDA) ≤ 5.5 V; VDD2 = VREG = VISO = 3.3 V; fSW = 500 kHz; all voltages are relative to their respective grounds; see the

application schematic in Figure 38. All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise

noted. All typical specifications are at TA = 25°C, VDD1 = VDDA = 5.0 V, VDD2 = VREG = VISO = 3.3 V.

Table 3.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

DC-TO-DC CONVERTER POWER SUPPLY

Isolated Output Voltage

VISO

3.0

3.3

3.6

IISO = 0 mA, VISO = VFB × (R1 + R2)/R2

Feedback Voltage Setpoint

VFB

1.15

1.25

1.35

IISO = 0 mA

Line Regulation

VISO (LINE)

mV/V

IISO = 50 mA, VCC = 4.5 V to 5.5 V

Load Regulation

VISO (LOAD)

IISO = 50 mA to 200 mA

Output Ripple

VISO (RIP)

mV p-p

20 MHz bandwidth,

COUT = 0.1 μF||47 μF, IISO = 100 mA

Output Noise

VISO (N)

100

mV p-p

20 MHz bandwidth,

COUT = 0.1 μF||47 μF, IISO = 100 mA

Switching Frequency

fSW

1000

kHz

ROC = 50 kΩ

200

kHz

ROC = 270 kΩ

209

318

515

kHz

VOC = VDD2 (open loop)

Switch On-Resistance

RON

0.5

Undervoltage Lockout, VCC, VDD2 Supplies

Positive Going Threshold

VUV+

2.8

Negative Going Threshold

VUV−

2.6

Hysteresis

VUVH

0.2

iCoupler DATA CHANNELS

DC to 2 Mbps Data Rate1

Maximum Output Supply Current2

IISO (MAX)

400

f ≤ 1 MHz, VISO = 3.3 V

Efficiency at Maximum Output

Supply Current3

IISO = IISO (MAX), f ≤ 1 MHz

ICC Supply Current, No VISO Load

ICC (Q)

IISO = 0 mA, f ≤ 1 MHz

ADuM3470

ADuM3471

ADuM3472

ADuM3473

ADuM3474

25 Mbps Data Rate (CRWZ Grade Only)

ICC Supply Current, No VISO Load

ICC (D)

ADuM3470