FS6407 datasheet(10/111 Pages) NXP

10 / 111 page

NXP Semiconductors

FS6407/FS6408

4.2

Static electrical characteristics

Table 4. Operating range

TCASE = -40 °C to 125 °C, unless otherwise specified. VSUP = VSUP_UV_L to 36 V, unless otherwise specified. All voltages referenced to

ground.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

Power supply

ISUP123

Power Supply Current in Normal Mode (VSUP > VSUP_UV_7)

2.0

–

13.0

ISUP3

Power Supply Current for VSUP3 in Normal Mode (VSUP > VSUP_UV_7)–

3.5

5.0

ISUP_LPOFF1

Power Supply Current in LPOFF (VSUP = 14 V at TA = 25 °C)

–

µA

ISUP_LPOFF2

Power Supply Current in LPOFF (VSUP = 18 V at TA = 80 °C)

–

µA

VSNS_UV

Power Supply Undervoltage Warning

–

8.5

–

VSNS_UV_HYST

Power Supply Undervoltage Warning Hysteresis

0.1

–

VSUP_UV_7

Power Supply Undervoltage Lockout (power-up)

7.0

–

8.0

VSUP_UV_5

Power Supply Undervoltage Lockout (power-up)

–

5.6

VSUP_UV_L

Power Supply Undervoltage Lockout (falling - Boost config.)

–

2.7

VSUP_UV_L_B

Power Supply Undervoltage Lockout (falling - Buck config.)

–

4.6

(7)

VSUP_UV_HYST

Power Supply Undervoltage Lockout Hysteresis

–

0.1

–

(8)

VPRE voltage pre-regulator

VPRE

VPRE Output Voltage

• Buck mode (VSUP > VSUP_UV_7)

• Buck mode (VSUP_UV_7 ≥ VSUP ≥ 4.6 V)

• Boost mode (VSUP ≥ 2.7 V)

6.25

VPRE_UV_4

6.0

–

VSUP -

RDSON_PR

E * IPRE

–

6.75

–

7.0

IPRE

VPRE Maximum Output Current Capability

• Buck or Boost with VSUP > VSUP_UV_7

• Buck with VSUP_UV_7 ≥ VSUP ≥ 4.6 V

• Boost with VSUP_UV_7 ≥ VSUP ≥ 6.0 V

• Boost with 6.0 V

≥ VSUP ≥ 4.0 V

• Boost with 4.0 V

≥ VSUP ≥ 2.7 V

–

0.5

–

1.0

0.3

–

1.7

–

(8)

IPRE_LPOFF

VPRE Maximum Output Current Capability in LPOFF at low VSUP

voltage

• Buck with VSUP_UV_7 ≥ VSUP ≥ 4.6 V

• Boost with VSUP_UV_7 ≥ VSUP ≥ 6.0 V

• Boost with 6.0 V

≥ VSUP ≥ 4.0 V

• Boost with 4.0 V

≥ VSUP ≥ 2.7 V

0.05

1.7

1.0

0.3

–

(8)

IPRE_LIM

VPRE Output Current Limitation

3.5

–

IPRE_OC

VPRE Overcurrent Detection Threshold (in buck mode only)

5.0

–

VPRE_UV

VPRE Undervoltage Detection Threshold (Falling)

5.5

–

6.0

Notes

VSUP_UV_L_B = VPRE_UV_4P3 + RDSON_PRE * IPRE

Guaranteed by design

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