Nexperia

NEX81801DA; NEX81802DA

Adaptive Synchronous Rectifier (SR) Controller

8.3. Recommended operating conditions

Table 6. Recommended operating conditions

Voltages are referenced to VS (ground = 0 V).

Symbol Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

-0.3

13.0

V

GT

gate driver output

-0.3

10.0

V

VD

MOSFET drain voltage sense

-1.0

100

V

HV

HV linear regulator input

-1.0

100

V

RSET

turn-on detection

-0.3

5.0

V

TJ

operation junction temperature

-40

125

°C

8.4. Recommended components

Table 7. Recommended components

Nominal component values, not including derating factors.

Symbol Parameter

Min

Typical

Max

Unit

CVCC

capacitance on VCC

0.047

0.1

2.2

μF

CSET

capacitance on RSET

-

NC

-

nF

RSET

resistance on RSET

0

36

200

kΩ

8.5. Electrical characteristics

Table 8. Static characteristics

Symbol

Parameter

Conditions

Min

Typ

Max Unit

Supply management section

VCC_ON

VCC supply voltage

VCC supply voltage (turn-on)

4.0

4.5

5.0 V

VCC_OFF

VCC supply voltage (turn-off)

3.5

4.0

4.5 V

VCC_HYS

VCC_UVLO hysteresis

-

0.5

-

V

VCC = 7 V; HV = 20 V

-

70

-

mA

IVCC_CHG

VCC maximum charging

current

VCC = 4 V; VD = 30 V; HV = 0 V

-

40

-

mA

VD = 12 V; HV = 12 V

8

9

10 V

VCC_REG VCC regulation voltage

VD = 12 V; HV = 3 V

5.5

6

6.5 V

VCC = 9 V; CLOAD = 2.2 nF; Fsw = 100 kHz

-

2.3

3

mA

ICC

current consumption

VCC = 6 V; CLOAD = 2.2 nF; Fsw = 100 kHz

-

1.4

1.8 mA

ICC_UVLO

current consumption under

UVLO

VCC = UVLO - 0.1 V

-

40

60 μA

Control circuitry section

VREG1

1st step regulation voltage

(VDS)

-50

-35

-20 mV

VREG2

2nd step regulation voltage

(VDS)

-200 -150 -100 mV

Vth_ON

turn-on threshold (VDS)

VD falling

-200 -150

-80 mV

Vth_OFF

turn-off threshold (VDS)

VD rising

-12

-3

6

mV

td_ON

turn-on delay

CLOAD = 2.2 nF

-

35

-

ns

td_OFF

turn-off delay

CLOAD = 2.2 nF

-

20

-

ns

NEX81801_2DA

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Nexperia B.V. 2024. All rights reserved

Product data sheet

Rev. 1 — 30 September 2024

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