IC manufacturers Torex

IC manufacturers (95)

Torex XC9140

Step-Up Synchronous PFM DC/DC Converter

Overview

TopologyBoost Converter
Input voltage0.7-5.5 V
Output 15 V / 0.08 A
IC revisionETR04015-009a

Description

The XC9140 series are step-up synchronous DC/DC converters that support ceramic capacitors and have an internal 0.6Ω Nch driver transistor and an internal 0.65Ω Pch synchronous rectifier switch transistor. PFM control enables a low quiescent current, making these products ideal for portable devices that require high efficiency.When the output voltage is 3.3V and the load current is 1mA, startup from an input voltage of VIN = 0.9V is possible which means that these products can be used in applications that start using a single alkaline or nickel-metal hydride battery.A version with a UVLO (Under Voltage Lock-out) function is also available. This function enables the prevention of battery leakage by stopping IC’s operation when the input voltage is low. The standard product has a UVLO release voltage of 1.65V, 2.15V and a custom version with a release voltage selectable from between 1.65V to 2.2V, in steps of 0.05V, is also available.

Features

  • Input Voltage Range :operating hold voltage 0.7V ~ 5.5V Start-up voltage 0.9V ~ 5.5V
  • Output Voltage Setting : Without UVLO 1.8V ~ 5.0V (±2.0%) With UVLO 3.0V ~ 5.0V (±2.0%)
  • Output Current : 80mA@VOUT =3.3V, VBAT =1.8V
  • Driver Transistor : 0.6Ω Nch driver transistor 0.65Ω Pch synchronous rectifier switch transistor
  • Supply Current : 6.3μA (VBAT=VOUT +0.5V)
  • Control Method : PFM Control
  • High speed transient response : 50mV@V OUT=3.3V, V BAT=1.8V, I OUT=1→50mA
  • PFM Switching Current : 350mA
  • Functions : Load Disconnection (A,B Type)Bypass Mode (C Type) CL discharge (B Type), UVLO
  • Output Capacitor Ceramic Capacitor
  • Operating Ambient Temperature : -40°C ~ 85°C
  • Packages : SOT-25, USP-6EL
  • Environmentally Friendly : EU RoHS Compliant, Pb Free

Typical applications

  • Bluetooth
  • Household use Medical equipments
  • Devices with 1~3 Alkaline, 1~3 Nickel Hydride, 1 Lithium and 1 Li-ion
  • Mouses, Keyboards
  • Remote controls, Game consoles

Products

Order Code Data­sheet Replacement Order Code Simu­lation Downloads Product seriesL
(µH)
IR,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
MountIR
(mA)
IR 2
(mA)
ISAT
(mA)
RDC
(mΩ)
TypeH
(mm)
W
(mm)
IR
(A)
IRP,40K
(A)
RDC typ.
(mΩ)
V
(V)
Samples
74479888247iSPEC
74479889247WE-PMI Power Multilayer Inductor 4.7 475 35 SMT 700 1000 700 380 High Saturation Current 1 2
74479889247SPEC
8 files WE-PMI Power Multilayer Inductor 4.7 500 35 SMT 650 900 900 400 High Saturation Current 1.2 2
74404024047SPEC
8 files WE-LQS SMT Power Inductor 4.7 52 SMT 1200 173 1.2 2 1.12 120
74438323047SPEC
9 files WE-MAPI SMT Power Inductor 4.7 0 1.1 2.3 388 35 SMT 1750 1 2 0.94 1.4 338 80
74438324047SPEC
9 files WE-MAPI SMT Power Inductor 4.7 0 1.4 2.65 345 35 SMT 2100 1.2 2 1 1.45 300 80
78438323047SPEC
8 files WE-MAIA SMT Power Inductor 4.7 1.4 1.1 2.3 388 35 SMT 1 2 338
78438324047SPEC
8 files WE-MAIA SMT Power Inductor 4.7 1.45 1.4 2.65 345 35 SMT 1.2 2 300
74405024047SPEC
9 files WE-LQSH SMT High Saturation Power Inductor 4.7 270 30 SMT 1900 1.2 2 1
74404020047SPEC
8 files WE-LQS SMT Power Inductor 4.7 71 SMT 850 410 1 1.6 0.72 120
74405020047SPEC
8 files WE-LQSH SMT High Saturation Power Inductor 4.7 444 35 SMT 1500 1 1.6 0.8
Samples
Order Code Data­sheet Replacement Order Code Simu­lation Downloads Product seriesL
(µH)
IR,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
MountIR
(mA)
IR 2
(mA)
ISAT
(mA)
RDC
(mΩ)
TypeH
(mm)
W
(mm)
IR
(A)
IRP,40K
(A)
RDC typ.
(mΩ)
V
(V)
Samples