Overview
The NVT4556BUKZ is a specialized integrated circuit designed by NXP USA Inc. for interfacing SIM cards with host microcontrollers. This device is particularly useful in mobile and wireless communication systems, providing a robust and efficient interface between the SIM card and the host system. It features an integrated Low Dropout (LDO) regulator and level translators to ensure seamless communication and voltage adaptation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VBAT | - | 2.5 | - | 5.5 | V |
| VCC | - | 1.55 | - | 3.6 | V |
| Temperature Range | - | -40 | - | 85 | °C |
| I2C-bus Clock Frequency (fclk) | - | - | - | 400 | kHz |
| High-Level Input Voltage (VIH) | 0.7 × VCC | - | - | V | |
| Low-Level Input Voltage (VIL) | - | - | 0.3 × VCC | V | |
| VSIM Voltage (1.8V mode) | 2.5 V ≤ VBAT ≤ 5.25 V | 1.7 | 1.8 | 1.9 | V |
| VSIM Voltage (3V mode) | 3.2 V ≤ VBAT ≤ 5.25 V | 2.85 | 3.0 | 3.15 | V |
| LDO Dropout Voltage | IO = 50 mA; VBAT = 2.90 V | - | - | 150 | mV |
| Start-up Time | VVSIM = 1.8 V or 3 V; IO = 50 mA; Co = 1 μF | - | - | 400 | μs |
Key Features
- Integrated Low Dropout (LDO) regulator providing 1.8 V or 3 V output from a typical mobile phone battery voltage.
- Three level translators for converting data, RSTn, and CLKn signals between the SIM card and the host microcontroller.
- I2C-bus interface for controlling the device and selecting the SIM card power supply voltage.
- Pb-free, RoHS compliant, and free of halogen and antimony (Dark Green compliant).
- Available in a 12-pin WLCSP package (1.205 mm × 1.605 mm × 0.412 mm, 0.4 mm pitch).
- Low power consumption with a maximum current draw of 100 μA from the VCC pin.
Applications
- Mobile and personal phones.
- Wireless modems.
- SIM card terminals.
Q & A
- What is the primary function of the NVT4556BUKZ?
The primary function of the NVT4556BUKZ is to interface a SIM card with a host microcontroller, providing voltage translation and level shifting for seamless communication. - What are the output voltages provided by the LDO regulator?
The LDO regulator can deliver two different voltages: 1.8 V or 3 V. - What is the operating temperature range of the NVT4556BUKZ?
The operating temperature range is from -40°C to +85°C. - What is the maximum I2C-bus clock frequency supported by the NVT4556BUKZ?
The maximum I2C-bus clock frequency supported is 400 kHz. - What is the package type and dimensions of the NVT4556BUKZ?
The device is available in a 12-pin WLCSP package with dimensions of 1.205 mm × 1.605 mm × 0.412 mm and a 0.4 mm pitch. - Is the NVT4556BUKZ RoHS compliant?
Yes, the NVT4556BUKZ is Pb-free, RoHS compliant, and free of halogen and antimony (Dark Green compliant). - What are the typical applications of the NVT4556BUKZ?
The typical applications include mobile and personal phones, wireless modems, and SIM card terminals. - How much current does the VCC pin draw?
The VCC pin draws a maximum current of 100 μA. - What is the start-up time for the LDO regulator?
The start-up time for the LDO regulator is up to 400 μs. - Can the NVT4556BUKZ be controlled via I2C-bus?
Yes, the NVT4556BUKZ can be controlled and configured via the I2C-bus interface.
