VR5510 datasheet(40/203 Pages) NXP

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NXP Semiconductors

VR5510

Multi-output PMIC with SMPS and LDO

Symbol

Parameter

Min

Typ

Max

Unit

DVS Ramp down Speed , BUCK12DVS_RAMP_OTP[1:0] = 00

7.87

13.02 19.75 mV/μs

DVS Ramp down Speed , BUCK12DVS_RAMP_OTP[1:0] = 01

3.87

6.51

9.87

mV/μs

DVS Ramp down Speed , BUCK12DVS_RAMP_OTP[1:0] = 10

1.95

3.25

4.92

mV/μs

VBUCK12_DVS_DOWN

(1.8 V)

DVS Ramp down Speed , BUCK12DVS_RAMP_OTP[1:0] = 11

1.67

2.78

4.22

mV/μs

TBUCK12_OFF_MIN

HS minimum OFF time

RBUCK12_HS_RON

HS PMOS RDSon, 3.6 Vgs, Tj = 125 C

—

135

mΩ

RBUCK12_LS_RON

LS NMOS RDSon, 3.6 Vgs, Tj = 125 C

—

mΩ

RBUCK12_DISch

Discharge Resistance (when BUCK1,2 is disabled and ramp down

completed)

—

Ω

TSDBUCK12

Thermal shutdown threshold

155

—

°C

TBUCK12_TSD

Thermal shutdown filtering time

—

μs

Table 17. Electrical characteristics...continued

12.6 BUCK1 and BUCK2 efficiency

Table 18 shows BUCK1 and BUCK2 efficiency versus current load based on a typical external component and

a 4.1 V VPRE voltage. For external components with characteristics different from the ones shown below, use

the VR5510 Power Calculator tool to recalculate the theoretical efficiency. The real efficiency must be verified by

measurement at the application level.

Ext. C and L

Cin

μF

ESR Cin

mΩ

Cout

μF

ESR Cout

mΩ

L coil

μH

DCR coil

mΩ

Int. MOSFET

HS_Rdson

135

mΩ

0.5

THS_sw

GHS_drive

LS-Rdson

mΩ

QLS

0.5

TLS_sw

GLS_drive

Ibuck1,2 (A)

2.75

2.0

1.0

BUCK1,2 Efficiency vs Ibuck1,2

1.25

0.25

0.5

0.75

2.25

2.5

1.50

1.75

aaa-039376

100

1.8 V

1.25 V

0.8 V

Table 18. BUCK1 and BUCK2 theoretical efficiency

VR5510

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 6 — 31 July 2023

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