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Overview
| Topology | Boost Converter |
| Input voltage | 0.7-5.5 V |
| Output 1 | 5 V / 0.08 A |
| IC revision | ETR04015-009a |
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
More information
Products
| Order Code | Datasheet | Replacement Order Code | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | IRP,40K (A) | Mount | IR (mA) | IR 2 (mA) | ISAT (mA) | RDC (mΩ) | Type | H (mm) | W (mm) | IR (A) | RDC typ. (mΩ) | VOP (V) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74479888247i | SPEC | 74479889247 | – | – | PTN i| Production will be discontinued. Expected lifetime: <2 years. | WE-PMI Power Multilayer Inductor | 4.7 | – | – | 475 | 35 | – | SMT | 700 | 1000 | 700 | 380 | High Saturation Current | 1 | 2 | – | – | – | – |
| 74479889247 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PMI Power Multilayer Inductor | 4.7 | – | – | 500 | 35 | – | SMT | 650 | 900 | 900 | 400 | High Saturation Current | 1.2 | 2 | – | – | – | ||
 | 74404024047 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQS SMT Power Inductor | 4.7 | – | – | – | 52 | – | SMT | – | – | 1200 | 173 | – | 1.2 | 2 | 1.12 | – | 120 | ||
 | 74438323047 | SPEC | – | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAPI SMT Power Inductor | 4.7 | 1.1 | 2.3 | 388 | 35 | 1.4 | SMT | – | – | 1750 | – | – | 1 | 2 | 0.94 | 338 | 80 | ||
| 74438324047 | SPEC | – | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAPI SMT Power Inductor | 4.7 | 1.4 | 2.65 | 345 | 35 | 1.45 | SMT | – | – | 2100 | – | – | 1.2 | 2 | 1 | 300 | 80 | ||
 | 78438323047 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAIA SMT Power Inductor | 4.7 | 1.1 | 2.3 | 388 | 35 | 1.4 | SMT | – | – | – | – | – | 1 | 2 | – | 338 | – | ||
| 78438324047 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAIA SMT Power Inductor | 4.7 | 1.4 | 2.65 | 345 | 35 | 1.45 | SMT | – | – | – | – | – | 1.2 | 2 | – | 300 | – | ||
 | 74405024047 | SPEC | – | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQSH SMT High Saturation Power Inductor | 4.7 | – | – | 270 | 30 | – | SMT | – | – | 1900 | – | – | 1.2 | 2 | 1 | 225 | – | ||
| 74404020047 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQS SMT Power Inductor | 4.7 | – | – | – | 71 | – | SMT | – | – | 850 | 410 | – | 1 | 1.6 | 0.72 | – | 120 | ||
| 74405020047 | SPEC | – | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LQSH SMT High Saturation Power Inductor | 4.7 | – | – | 444 | 35 | – | SMT | – | – | 1500 | – | – | 1 | 1.6 | 0.8 | 370 | – |
| Order Code | Datasheet | Replacement Order Code | Simulation | |
|---|---|---|---|---|
| 74479888247i | SPEC | 74479889247 | – |
| 74479889247 | SPEC | – | |
| 74404024047 | SPEC | – | |
| 74438323047 | SPEC | – | |
| 74438324047 | SPEC | – | |
| 78438323047 | SPEC | – | |
| 78438324047 | SPEC | – | |
| 74405024047 | SPEC | – | |
| 74404020047 | SPEC | – | |
| 74405020047 | SPEC | – |
| Samples |
|---|
| – |
| Order Code | Datasheet | Replacement Order Code | Simulation | Downloads | Status | Product series | L (µH) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | IRP,40K (A) | Mount | IR (mA) | IR 2 (mA) | ISAT (mA) | RDC (mΩ) | Type | H (mm) | W (mm) | IR (A) | RDC typ. (mΩ) | VOP (V) | Samples |
|---|