L99LD02 datasheet(57/66 Pages) STMICROELECTRONICS

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DS12448 Rev 3

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L99LD02

Electrical specifications

Vcomp_max(1)

Maximum value for boost

output regulation

Vs = 13.5 V

VDD = 5 V

Boost active in closed loop

Ramp on BST_OUT from 14.7 V

to 80 V

Load on BST_OUT = 136 Ω

BST_FREQ = 303 KHz

RSLOPE = 3 kΩ

GM_OTA = 200 µS

3(2)

Icomp_leak

Comp output leakage if

boost is deactivated

Error Amplifier disabled, high-

impedance tri-state

1µA

1. Parameter guaranteed by design and characterization - not subject to production test.

2. Vcomp_max value is also achieved performing the test in open load.

Table 36. Boost controller (continued)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

Table 37. Boost controller reference voltage

Symbol

Parameter

Test conditions

Min

Typ

Max Unit

VBST_OUT_OV_ON

Boost output

overvoltage activation

threshold

Vs = 13.5 V

VDD = 5 V

Ramp on BST_OUT pin

from 77 V up to 85 V

80.5 1.03 * VBST_OUT[1111111] 85.8

VBST_OUT_OV_OFF

Boost output

overvoltage



de-activation threshold

Vs = 13.5 V

VDD = 5 V

Ramp on BST_OUT pin

from 85 V down to 77 V

76.9

VBST_OUT [1111111]

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