LPC3152FET208,551 NXP Semiconductors, LPC3152FET208,551 Datasheet - Page 45

• Manufacturer Part Number: LPC3152FET208,551
• Description: IC ARM9 MCU USB OTG 208TFBGA
• Manufacturer: NXP Semiconductors
• Series: LPC3000r

Specifications of LPC3152FET208,551

• Package / Case: 208-TFBGA
• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, I²C, IrDA, MMC, PCM, SPI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, PWM, WDT
• Number Of I /o: 10
• Program Memory Type: ROMless
• Ram Size: 192K x 8
• Voltage - Supply (vcc/vdd): 1.1 V ~ 3.6 V
• Data Converters: A/D 3x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC31
• Core: ARM926EJS
• Data Bus Width: 32 bit
• Data Ram Size: 192 KB
• Interface Type: I2C, I2S, SPI, UART
• Maximum Clock Frequency: 180 MHz
• Number Of Timers: 5
• Operating Supply Voltage: 1.2 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: OM11029
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935287561551

NXP Semiconductors
LPC3152_3154
Preliminary data sheet
7.4 USB charge pump (host mode)
7.5 Power Supply Unit (PSU)
The USB charge pump uses the Li-ion battery to provide a low-power USB VBUS signal
for the USB controller in host mode.
The integrated PSU allows the system to run directly from the battery voltage or the USB
power supply voltage USB_VBUS. It converts the battery voltage or the USB_VBUS
voltage into the supply voltages required for both the digital and analog blocks in the rest
of the system.
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The nominal charge current is programmed with an external program-resistor. This
allows the charge current to be adapted to the USB enumeration.
Uses a widespread method to charge a Li-ion battery with the following stages:
– Trickle charging with a small current for an (almost) empty battery.
– Fast charging in Constant Current mode (CC mode) to the maximum battery
– Switch from CC mode to Constant Voltage charging (CV mode) keeping the battery
Short circuit resistant.
Charger state can be observed through a register.
voltage of 4.2 V ± 1%.
voltage at 4.2 V and monitoring the current for ending the charge process.
All information provided in this document is subject to legal disclaimers.
Rev. 0.12 — 27 May 2010
LPC3152/3154
© NXP B.V. 2010. All rights reserved.
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