34701 datasheet(10/38 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34701

ELECTRICAL CHARACTERISTICS

STATIC ELECTRICAL CHARACTERISTICS

LINEAR REGULATOR (LDO)

LDO Feedback Voltage (16)

VIN1 = VIN2 = 2.8 V to 6.0 V, ILDO = 10 mA to 1000 mA. Includes Load

Regulation Error

VLFB

0.784

0.800

0.816

LDO Voltage Margining Step Size

VMLDO

–1.0

–

LDO Voltage Margining Highest Positive Value

VMP

5.9–7.9

LDO Voltage Margining Lowest Negative Value

VMN

-7.9–-5.9

LDO Line Regulation (16)

VIN1 = VIN2 = 2.8 V to 6.0 V, ILDO = 1000 mA

REGLNVLDO

-1.0

–

1.0

LDO Load Regulation (16)

ILDO = 10 mA to 1000 mA

REGLDVLDO

-1.0

–

1.0

LDO Ripple Rejection, Dropout Voltage (16)

VDO = 1.0 V, VRIPPLE = +1.0 V p-p

Sinusoidal, f = 300 kHz, ILDO = 500 mA (15)

VLDO_RR

–40

–

LDO Maximum Dropout Voltage (VIN - VLDO), using IRL2703 (16)

VLDO = 2.5 V, ILDO = 1000 mA

VDO

–50

LDO Current Sense Comparator Threshold Voltage (VCS - VLDO)

VCSTH

LDO Pin Input Current, VLDO = 5.25 V

ILDO

1.0

1.9

4.0

LDO Feedback Input Current (LFB Pin), VLFB = 0.8 V

ILFB

-1.0

–

1.0

µA

LDO Drive Output Current (LDRV Pin), VLDRV = 0 V

ILDRV

-5.0

-3.3

-2.0

CS Pin Input Leakage Current

VCS = 5.25 V

ICSLK

–

200

µA

LDO Pulldown MOSFET Q4 Current Limit

TA = 25°C, VBST = 8.0 V (LDO Pin)

ILIMQ4

0.75

–

2.0

LDO Pulldown MOSFET Q4 RDS(ON)

ID = 1.0 A, VBST = 8.0 V

RDS(ON)Q4

––

1.9

Ω

LDO Recommended Output Capacitance

CLDO

–10

–

µF

LDO Recommended Output Capacitor ESR

RLDO

–5.0

–

Ω

Thermal Shutdown (LDO Pull-down MOSFET Q4) (15)

TSD

150

170

190

°C

Thermal Shutdown Hysteresis (15)

TSDHYS

–10

–

°C

Notes

15.

Design information only. This parameter is not production tested.

16.

IDO refers to Load Current on External LDOFET - IRL2703 is the Intersil MOSFET.

Table 3. Static Electrical Characteristics (continued)

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

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