ADP3404 Analog Devices, ADP3404 Datasheet
ADP3404
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ADP3404 Summary of contents
Page 1
... The ADP3404 is a multifunction power management system IC optimized for GSM cell phones. The wide input voltage range of 3 7.0 V makes the ADP3404 ideal for both single cell Li-Ion and three cell NiMH designs. The current consumption of the ADP3404 has been optimized for maximum battery life, featuring a ground current of only 230 µ ...
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... ADP3404–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter SHUTDOWN SUPPLY CURRENT VBAT = Low (UVLO Low) VBAT = High (UVLO High) OPERATING GROUND CURRENT VCC, VRTC, VCCA, REFOUT On VCC, VRTC, VCCA, REFOUT and VSIM On All LDOs and VSIM On All LDOs and VSIM On UVLO CHARACTERISTICS UVLO On Threshold ...
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... (I/ (I/ ± 10 µ (I/ ADP3404 Min Typ Max Unit 2.710 2.765 2.820 µF 0.22 150 µV rms 80 1.192 1.210 1.228 0 ...
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... ADP3404–SPECIFICATIONS Parameter SIM INTERFACE VSIM = 5 V RST RST CLK CLK I/O I/O I/O I/O VSIM = 3 V RST RST CLK CLK I/O I/O I/O I/O I/O Pull-Up Resistance to VSIM Max Frequency (CLK) Prop Delay (CLK) Output Rise/Fall Times (CLK) Output Rise/Fall Times (I/O, RST) Duty Cycle (CLK) RESET GENERATOR (RESET) Output High Voltage ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADP3404 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... Don’t care Bold denotes the active control signal. VCC Off Don’t care ADP3404 20k PWRONKEY ROWX PWRONIN RESCAP CHARGER CHRON ON THRESHOLD ANALOGON SIMBAT CAP+ EN CHARGE CAP– PUMP SIMPROG 3V/5V EN GND SIMON ...
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... VBAT 100mV/DIV 3.2 3.0 VCC 10mV/DIV VCCA 10mV/DIV VTCXO 10mV/DIV 120 140 VBAT (100mV/DIV) 3.2 3.0 VCC (10mV/DIV) VCCA (10mV/DIV) VTCXO (10mV/DIV ADP3404 + 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 VRTC – V MLCC CAPS TIME – 100 s/DIV MLCC CAPS TIME – 100 s/DIV ...
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... ADP3404 I LOAD I = 200 A VCC TIME – 200 s/DIV I LOAD VCCA TIME – 100 s/DIV PWRONIN AND ANALOGON (2V/DIV) VCCA (100mV/DIV) VTCXO (100mV/DIV) VCC (100mV/DIV) TIME – 50 s/DIV MLCC CAPS I = 100mA 80 MLCC CAPS 130mA 60 MLCC OUTPUT CAPS 50 VBAT = 3.2V, FULL LOADS ...
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... Only a few support components, mainly decoupling capacitors, are required. Input Voltage The input voltage range for ADP3404 and optimized for a single Li-Ion cell or three NiMH/NiCd cells. The thermal impedance (θ The charging voltage for a high capacity NiMH cell can be as high as 5 ...
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... Figure 5. See Table II for the control logic of the charge pump output, VSIM. Power-On/-Off ADP3404 handles all issues regarding power-on/-off of the hand- set possible to turn on the ADP3404 in three different ways: • Pulling PWRONKEY Low • Pulling PWRONIN High • CHRON exceeds threshold Pulling PWRONKEY key low is the normal way of turning on the handset ...
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... Once the system is started, i.e., the phone is turned on and the VCC LDO is up and running, the UVLO function is entirely disabled. The ADP3404 is then allowed to run down to very low battery voltages, typically around 2 V. The battery voltage is normally monitored by the microprocessor and usually shuts the phone off at around 3 ...
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... Choose a diode with a current rating high enough to handle both the battery charging current and the current the ADP3404 will draw if pow- ered up during charging. The battery charging current is dependent on the battery chemistry, and the charger circuit. The ADP3404 current will be dependent on the loading ...