13892 datasheet(15/158 Pages) FREESCALE

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ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Analog Integrated Circuit Device Data



Freescale Semiconductor

MC13892

BUCK REGULATORS

Operating Input Voltage

PWM operation, 0 < IL < IMAX

PFM operation, 0 < IL < IMAX

Extended PWM or PFM operation(25)

VSWIN

3.0

2.8

UVDET

–

4.65

Output Voltage Range

Switcher 1

Switchers 2, 3, and 4

VSW1

0.6

–

1.375

1.850

Output Accuracy

PWM mode including ripple, load regulation, and transients (26)

PFM Mode, including ripple, load regulation, and transients

VSWLOPP

VSWLIPPI

Nom-50

Nom

Nom+50

Maximum Continuous Load Current, IMAX, VINMIN<BP<4.65 V

SW1 in PWM mode (SWILIMB = 0, no max current limit)



SW1 in PWM Mode (SWILIMB = 1, no max current limit)(27)



SW2, SW3, SW4 in PWM mode (SWILIMB = 0, no max current limit)



SW2, SW3, SW4 in PWM mode (SWILIMB = 1, no max current limit)(27)



SW1, SW2, SW3, SW4 in PFM mode

ISW1

ISW2,3,4

ISW1, 2, 3, 4

800

1050

800

–

Maximum Peak Load Current, IPEAK, BP 4.2 V,

SW1 in PWM Mode (SWILIMB = 1, no max current limit)(27)



SW4 in PWM Mode (SWILIMB = 1, no max current limit)(27)

ISW1

ISW4

1250

1000

–

Notes

25.

In the extended operating range the performance may be degraded

26.

Transient loading for load steps of ILmax/2

27.

In this mode, current limit protection is disabled for SW1 - SW4 by setting SWILIMB = 1. Therefore, the load on SW1-4 should not exceed

the conditions specified in the table above. Application needs to provide current limit protection circuitry either in battery or as pre-

regulated supply to BP.

Table 5. Static Electrical Characteristics (continued)

Characteristics noted under conditions -40

C  TA  85 C, GND = 0 V unless otherwise noted. Typical values noted reflect

the approximate parameter means at TA = 25 °C under nominal conditions, unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

13892 Datasheet(PDF) 15 Page - Freescale Semiconductor, Inc

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