34701_07 datasheet(7/38 Pages) FREESCALE

Il numero della parte	34701

Spiegazioni elettronici	1.5 A Switch-Mode Power Supply with Linear Regulator

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Produttore elettronici	FREESCALE [Freescale Semiconductor, Inc]

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Analog Integrated Circuit Device Data

Freescale Semiconductor

7

34701

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

Table 3. Static Electrical Characteristics

Characteristics noted under conditions -40°C ≤ TA ≤ 85°C unless otherwise noted. Input voltages VIN1 = VIN2 = 3.3 V using

the typical application circuit (see Figure 33) unless otherwise noted.

Characteristic

Symbol

Min

Typ

Max

Unit

GENERAL

Operating Voltage Range (VIN1, VIN2)

VIN

2.8–6.0

V

Start-Up Voltage Threshold (Boost Switching)

VST

–1.6

1.8

V

VBST Undervoltage Lockout (VBST rising)

VBST_UVLO

5.5–6.5

V

VBST Undervoltage Lockout Hysteresis

VBST_UVLO_HYS

0.5–1.5

V

Input DC Supply Current (Normal Operation Mode, Enabled), Unloaded

Outputs

IIN

–60

–

mA

VIN1 Pin Input Supply Current (EN1 = EN2 = 0)

IIN1

–10

–

mA

VIN2 Pin Input Leakage Current (EN1 = EN2 = 0)

IIN2

–

100

–

µA

VDDI Internal Supply Voltage

VDDI

2.9–3.3

V

VDDI Maximum Output Current (Externally Loaded)

IDDI

––

-10

mA

BUCK CONVERTER

Buck Converter Feedback Voltage (7), (8)

IVOUT = 15 mA to 1.5 A. Includes Load Regulation Error

VINV

0.784

0.800

0.816

V

Buck Converter Voltage Margining Step Size

VMVO

–1.0

–

%

Buck Converter Voltage Margining Highest Positive Value

VMP

5.9–7.9

%

Buck Converter Voltage Margining Lowest Negative Value

VMN

-7.9–-5.9

%

Buck Converter Line Regulation (7), (8)

VIN1 = VIN2 = 2.8 V to 6.0 V, IVOUT = 15 mA to 1.5 A

REGLNVO

-1.0

–

1.0

%

Buck Converter Load Regulation (7), (8)

VIN1 = VIN2 = 2.8 V to 6.0 V, IVOUT = 15 mA to 1.5 A

REGLDVO

-1.0

–

1.0

%

VOUT Input Leakage Current

VOUT = 5.25 V

IINVOUT

–3.5

–

mA

INV Input Leakage Current

INV = 0.8 V

IININV

-1.0

–

1.0

µA

Notes

7.

Design information only. This parameter is not production tested.

8.

IVOUT refers to load current on output switcher.

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