NPM1100-CAAA-R datasheet(30/58 Pages) NORDIC

30 / 58 page

Core components

Parameter

Value

Units

Nominal inductance

2.2

μH

Inductor tolerance

≤ 20

DC resistance (DCR)

≤ 400

mΩ

Saturation current (lsat)

≥ 350

Maximum current (lmax)

≥ 350

Table 18: Component selection

6.3.4 Electrical parameters

Symbol

Description

Min.

Typ.

Max.

Unit

VOUTBACC

VOUTB accuracy

-2

IOUTBSHORT

Short circuit current limit

400

IPWMTHRES

Load current threshold from Hysteretic to PWM

mode (MODE = LOW)

IHYSTTHRES

Load current threshold from PWM to Hysteretic

mode (MODE = LOW)

VOUTBRIPPLE_HYST

VOUTB ripple, MODE = HIGH or load current above

IPWMTHRES

mVpp

VOUTBRIPPLE_HYST VOUT ripple, MODE = LOW and load current below

IPWMTHRES

mVpp

EFFBUCK

Efficiency,

VOUTBSET = 11 (VOUTB = 3.0 V), VINT =

3.7 V, IOUTB = 100 mA

93.5

VDROPOUT_BUCK

Dropout voltage, V(

VOUTB) - VINT

0.41

FBUCK

Switching frequency for PWM mode

3.6

MHz

TPWMMODE

Hysteretic to PWM mode transition time on

MODE

pin toggle

μs

THYSTMODE

PWM to Hysteretic mode transition time on

MODE

pin toggle

μs

TPWM

Hysteretic to PWM mode transition time

μs

THYST

PWM to Hysteretic mode transition time

μs

TSETTLE

Settling time to within 1% after load transient of 0

A to 100 mA

μs

VINTBUCKMIN

Minimum VINT voltage for enabling BUCK

2.8

Table 19: Electrical parameters

4445_367 v1.0

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