L99LD02 datasheet(53/66 Pages) STMICROELECTRONICS

tên linh kiện	L99LD02

Giải thích chi tiết về linh kiện	Automotive dual-phase boost DC/DC controller

PDF	66 Pages

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Trang chủ	http://www.st.com

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53 / 66 page

DS12448 Rev 3

53/66

L99LD02

Electrical specifications

6.4.2

Boost controller

VS operating current

Device in active mode

Boost active in open loop

VDD = 5 V

VS = 13.5 V

VBST_OUT = 25 V

BST_FREQ= 100 kHz

V3V3

Output Voltage of 3V3

LDO

Vs > 4V

Iload= 1mA;



C3V3 = 1µF

3.2

3.3

3.4

I3V3_LIM

Current capability of

3V3 LDO

Vs = 13.5V

V3V3 pin forced to 2.5V

VPOR,H

Power-on reset high

state

Ramp on V3V3 from 2.8 V to 2 V

2.35

2.7

VPOR,HYST

Power-on reset

hysteresis

0.035

Table 34. Supply (continued)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

Table 35. Boost gate driver

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

tG0x

Gate driver output rise

and fall time

VS = 13.5 V CG0x = 4.7 nF

VGS_G0x rising from 10% ÷ 90%

100

VS = 13.5 V; CG0x = 4.7 nF

VGS_G0x falling from 90% ÷

10%

100

VGOx_H

Gate driver High output

voltage

0.9 * V10V

V10V

VGOx_L

Gate driver Low output

voltage

0.3

RONHS

High−side switch

impedance

VS = 13.5 V

VDD = 5 V

VSN = 0 V

Iload = 100 mA 

(current sunk from GOx pin)

2.5

5.2

Ω

RONLS

Low−side switch

impedance

VS = 13.5 V

VDD = 5 V

VSN = 0 V

Iload = 100 mA 

(current sourced from GOx pin)

0.7

1.6

Ω

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