VR5100 datasheet(13/108 Pages) NXP

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NXP Semiconductors

VR5100

GENERAL PRODUCT CHARACTERISTICS

ELECTRICAL CHARACTERISTICS

Table 8. Static electrical characteristics – SW3

All parameters are specified at TA = -40 °C to 105 °C, VIN = VPVIN3 = 3.6 V, VSW3 = 1.5 V, ISW3 = 100 mA, typical external component

values, fSW3 = 2.0 MHz. Typical values are characterized at VIN = VPVIN3 = 3.6 V, VSW3 = 1.5 V, ISW3 = 100 mA, and 25 °C, unless

otherwise noted.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

Switch mode supply SW3

VPVIN3

Operating input voltage

2.8

–

4.5

(21)

VSW3

Nominal output voltage

–

Table 50

–V

VSW3ACC

Output voltage accuracy

• PWM, APS, 2.8 V < VPVIN3 < 4.5 V, 0 < ISW3 < 1.5 A, 0.9 V < VSW3

< 1.65 V

• PFM, steady state (2.8 V < VPVIN3 < 4.5 V, 0 < ISW3 < 50 mA), 0.9 V

< VSW3 < 1.65 V

-3.0%

-6.0%

–

3.0%

6.0%

ISW3

Rated output load current, 2.8 V < VPVIN3 < 4.5 V, 0.9 V < VSW3 <

1.65 V, PWM, APS mode

1500

–

(22)

ISW3Q

Quiescent current

• PFM Mode

• APS Mode

–

150

–

µA

ISW3LIM

Current limiter peak current detection, current through inductor

• SW3ILIM = 0

• SW3ILIM = 1

1.95

1.45

3.0

2.25

4.05

3.05

ΔVSW3

Output ripple

–

5.0

–

RONSW3P

SW3 P-MOSFET RDS(on)at VIN = VSW3IN = 3.3 V

–

205

235

RONSW3N

SW3 N-MOSFET RDS(on) at VIN = VSW3IN = 3.3 V

–

250

315

ISW3PQ

SW3 P-MOSFET leakage current, VIN = VSW3IN = 4.5 V

––

µA

ISW3NQ

SW3 N-MOSFET leakage current, VIN = VSW3IN = 4.5 V

––

4.0

µA

RSW3DIS

Discharge resistance during Off mode

–

600

–

VSW3OSH

Start-up overshoot, ISW3 = 0.0 mA, DVS clk = 25 mV/4 μs, VIN = VPVIN3

= 4.5 V

––

tONSW3

Turn-on time, enable to 90% of end value, ISW3 = 0 mA, DVS clk =

25 mV/4

μs, VIN = VPVIN3 = 4.5 V

–

500

µs

Notes

21.

Minimum operating voltage is 2.8 V with a valid LICELL voltage (1.8 V to 3.3 V). Minimum operating voltage is 3.1 V when no voltage is applied at

the LICELL pin. If operation down to 2.8 V is required for systems without a coin cell, connect the LICELL pin to any system voltage between 1.8 V

and 3.3 V. This voltage can be an output from any VR5100 regulator, or external system supply.

22.

The higher output voltages available depend on the voltage drop in the conduction path as given by the following equation: (VSW3IN - VSW3) =

ISW3* (DCR of Inductor +RONSW3P + PCB trace resistance).

VR5100 Datasheet(PDF) 13 Page - NXP Semiconductors

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