L6986HTR datasheet(9/68 Pages) STMICROELECTRONICS

9 / 68 page

TJ = 25 °C, VIN= 12 V unless otherwise specified.

Table 6. fSW selection

Symbol

RVCC (E24 series)

RGND (E24 series)

fSW min.

fSW typ.

fSW max.

Unit

fSW

0 Ω

(1)

225

250

275

kHz

1.8 Ω

(1)(2)

285

3.3 kΩ

330

5.6 kΩ

380

10 kΩ

435

0 Ω

(3)

450

500

550

18 kΩ

(1) (3)

575

33 kΩ

660

56 kΩ

755

1.8 kΩ

870

3.3 kΩ

(3)

900

1000

1100

5.6 kΩ

(2) (3)

1150

10 kΩ

1310

18 kΩ

1500

33 kΩ

(3)

1575

1750

1925

56 kΩ

(3)

1800

2000

2200

1. Synchronization as slave in LNM between 275 kHz and 1400 kHz.

2. Not tested in production

3. Synchronization as slave in LNM between 475 kHz and 2200 kHz

TJ = 25 °C, VIN = 12 V unless otherwise specified.

Table 7. LNM/ LCM selection (L6986H3V3)

Symbol RVCC(E24 1%) RGND(E24 1%) Operating mode

VRST/VOUT (tgt.

value)

VRST min. VRST typ. VRST max. Unit

VRST

0 Ω

LCM

93%

3.008

3.069

3.130

8.2 kΩ

80%

2.587

2.640

2.693

18 kΩ

87%

2.814

2.871

2.928

39 kΩ

96%

3.105

3.168

3.231

0 Ω

LNM

93%

3.008

3.069

3.130

8.2 kΩ

80%

2.587

2.640

2.693

18 kΩ

87%

2.814

2.871

2.928

39 kΩ

96%

3.105

3.168

3.231

L6986H

Electrical characteristics

DS12905 - Rev 2

page 9/68

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