VR5100 datasheet(12/108 Pages) NXP

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NXP Semiconductors

VR5100

GENERAL PRODUCT CHARACTERISTICS

ELECTRICAL CHARACTERISTICS

Table 7. Static electrical characteristics – SW2

All parameters are specified at TA = -40 °C to 105 °C, VIN = VPVIN2 = 3.6 V, VSW2 = 3.15 V, ISW2 = 100 mA, typical external component

values, fSW2 = 2.0 MHz, unless otherwise noted. Typical values are characterized at VIN = VPVIN2 = 3.6 V, VSW2 = 3.15 V, ISW2 = 100 mA,

and 25 °C, unless otherwise noted.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Notes

Switch mode supply SW2

VPVIN2

Operating input voltage

2.8

–

4.5

(19)

VSW2

Nominal output voltage

–

Table 48

–V

VSW2ACC

Output voltage accuracy

• PWM, APS, 2.8 V

≤ VPVIN2 ≤ 4.5 V, 0 ≤ ISW2 ≤ 1.25 A

• 1.50 V

≤ VSW2 ≤ 1.85 V

• 2.5 V

≤ VSW2 ≤ 3.3 V

• PFM, 2.8 V

≤ VPVIN2 ≤ 4.5 V, 0 ≤ ISW2 ≤ 50 mA

• 1.50 V

≤ VSW2 ≤ 1.85 V

• 2.5 V

≤ VSW2 ≤ 3.3 V

-3.0%

-6.0%

–

3.0%

6.0%

ISW2

Rated output load current,

2.8 V < VPVIN2 < 4.5 V, 1.50 V < VSW2 < 1.85 V, 2.5 V < VSW2 < 3.3 V

1250

–

(20)

ISW2Q

Quiescent current

• PFM mode

• APS mode (Low output voltage settings)

• APS mode (High output voltage settings, SW2_HI=1)

–

145

305

–

µA

ISW2LIM

Current limiter peak current detection, current through inductor

• SW2ILIM = 0

• SW2ILIM = 1

1.625

1.235

2.5

1.9

3.375

2.565

ΔVSW2

Output ripple

–

5.0

–

RONSW2P

SW2 P-MOSFET RDS(on) at VIN = VPVIN2 = 3.3 V

–

215

245

RONSW2N

SW2 N-MOSFET RDS(on) at VIN = VPVIN2 = 3.3 V

–

258

326

ISW2PQ

SW2 P-MOSFET leakage current, VIN = VPVIN2 = 4.5 V

–

10.5

µA

ISW2NQ

SW2 N-MOSFET leakage current, VIN = VPVIN2 = 4.5 V

––

3.0

µA

RSW2DIS

Discharge resistance during OFF mode

–

600

–

VSW2OSH

Start-up overshoot, ISW2 = 0.0 mA, DVS clk = 25 mV/4 μs,

VIN = VPVIN2 = 4.5 V

––

tONSW2

Turn-on time, enable to 90% of end value, ISW2 = 0.0 mA,

DVS clk = 25 mV/4

μs, VIN = VPVIN2 = 4.5 V

–

500

µs

Notes

19.

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.

20.

The higher output voltages available depend on the voltage drop in the conduction path as given by the following equation: (VPVIN2 - VSW2) = ISW2*

(DCR of Inductor + RONSW2P + PCB trace resistance).

VR5100 Datasheet(PDF) 12 Page - NXP Semiconductors

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