nPM1100 Power Management IC from Nordic Semiconductor Delivers Power to Your Circuits and Charges Battery
Nordic Semiconductor's new nPM1100 Power Management IC (PMIC) can deliver power to circuits and charge battery of your portable device designs.
Nordic Semiconductor ASA entered the power management solutions market with their new nPM1100 Power Management IC (PMIC). The chip comes in a 2x2mm ultra-small form-factor yet packs everything for your portable solutions. It integrates a dual-mode configurable DC-DC step down buck converter and a battery charge controller. The input voltage ranges from 4.1V to 6.7V and delivers a maximum of 150mA to the regulated output. The battery charge controller can deliver up to 400mA and supports different battery chemistries.
The high efficiency buck regulator can reach up to 92% while maintaining specified output. This delivers clean power to nRF52 and nRF53 series SoC based applications. The regulator has two modes – Hysteritic and PWM modes. The Hysteric mode reduces power consumptions for low load conditions. PWM mode is suitable for high current needs. The chip supports USB power input and has USB detect function.
nPM1100 Features
- Ultra-small form factor PMIC
- 2.075 x 2.075 mm WLCSP package
- 400 mA battery charger
- Automatic charging mode
- For Li-ion and Li-Polymer batteries
- Battery thermal protection
- Highly efficient regulator
- Up to 92 % power conversion efficiency
- Hysteretic and PWM mode
- Selectable outout voltage
- 150 mA current limit
- Input regulator with USB support
- SDP, CDP, DCP port detection
- Overvoltage protection
- Ship mode that disables power output
- Drivers for charge and error LEDs
- -40°C to 85°C operating temperature
nPM1100 Specifications
| Battery charger | |
| Regulatory compliance | JEITA compliant |
| Termination voltage | 4.1 V or 4.2 V selectable |
| Charge current | 20 mA to 400 mA |
| Input regulator | |
| Input voltage | 4.1 to 6.7 V |
| Output voltage | 3.0 to 5.5 V unregulated |
| Overvoltage protection | 20 V transient |
| USB current limit | 100 mA or 500 mA |
| Buck regulator | |
| Output voltage | 1.8, 2.1, 2.7 or 3.0 V |
| Current limit | 150 mA output |
| Quiescent currents | 800 nA typical, 460 nA in ship mode |
| Battery voltage | 2.3 V to 4.35 V |
| Operating temperature | -40°C to 85°C |
Nordic also announced the availability of an evaluation board for nPM1100 – the nPM1100 Evaluation Kit. The kit integrates all input and output pins, connectors and switches for setting the configuration. It can be powered through a micro-USB or an external DC supply.
nPM1100 Pinout
| Pin | Name | Function | Description | Recommended usage |
|---|---|---|---|---|
| A1 | D- | Analog input | USB D- data line | |
| A2 | D+ | Analog input | USB D+ data line | |
| A3 | DEC | Power | System decoupling capacitor | |
| A4 | SW | Power | BUCK converter output (to inductor) | |
| A5 | PVSS | Power | Ground (DC/DC) | |
| B1 | VBUS | Power | Input supply | |
| B2 | VBUS | Power | Input supply | |
| B3 | VOUTBSET1 | Digital I/O | BUCK regulator output voltage selection | Toggle only when the device is in Power OFF |
| B4 | VOUTBSET0 | Digital I/O | BUCK regulator output voltage selection | Toggle only when the device is in Power OFF |
| B5 | VOUTB | Power | BUCK regulator output | |
| C1 | VSYS | Power | System voltage output; automatically enabled after power-on reset | |
| C2 | VSYS | Power | System voltage output; automatically enabled after power-on reset | |
| C3 | VTERMSET | Digital I/O | Battery charging termination voltage selection:0 to 4.10 V1 to 4.20 V | Toggle only when the device is in Power OFF |
| C4 | AVSS | Power | Ground | |
| C5 | AVSS | Power | Ground | |
| D1 | VBAT | Power | Battery | |
| D2 | VBAT | Power | Battery | |
| D3 | SHPHLD | Digital I/O | Shipping mode hold | |
| D4 | SHPACT | Digital I/O | Shipping mode activate | |
| D5 | ISET | Digital I/O | VBUS current limit selection:0 mA to 100 mA (SDP mode only)1 mA to 500 mA | |
| E1 | NTC | Analog input | NTC resistor | |
| E2 | ICHG | Analog input | Charge current limiting resistor | |
| E3 | ERR | Digital OUT | Open-drain LED driver; enabled when error condition in charging | |
| E4 | CHG | Digital OUT | Open-drain LED driver; enabled when battery is charging | |
| E5 | MODE | Digital I/O | 0 – automatic1 – Forced PWM |
nPM1100 Evaluation Kit Features
- nPM1100 PMIC
- All features enabled
- Performance optimized layout
- 400 mA battery charger
- Highly efficient buck regulator
- Input regulator that supports USB charging
- Low quiescent currents
- Requires no software to operate I/O
- Pin headers to all pins on nPM1100
- USB connector & battery connectors
- LEDs for charge and error indication
- Switches
- ICHRG, VTERM, ISET, VOUTB and MODE
- Buttons to enter and exit ship mode
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