LTC4413-1 Linear Technology Corporation, LTC4413-1 Datasheet
LTC4413-1
Related parts for LTC4413-1
LTC4413-1 Summary of contents
Page 1
... Two active-high control pins independently turn off the two ideal diodes contained within the LTC4413-1/LTC4413-2. When the selected channel is reverse biased, or the LTC4413-1/LTC4413-2 is put into low power standby, the status signal is pulled low by an 11μA open drain. The LTC4413-1/LTC4413-2 are housed in a 10-lead 3mm × ...
Page 2
... LTC4413-1/LTC4413-2 ABSOLUTE MAXIMUM RATINGS INA, INB, OUTA, OUTB, STAT, ENBA, ENBB Voltage .................................... –0. OVI, OVP Voltage ....................................... –0.3V to 13V Operating Temperature Range.................. –40°C to 85°C PIN CONFIGURATION TOP VIEW INA 1 ENBA 2 11 GND 3 ENBB 4 INB 5 DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN T = 125° ...
Page 3
... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4413-1/LTC4413-2 are guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C ambient operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... LTC4413-1/LTC4413-2 TYPICAL PERFORMANCE CHARACTERISTICS (Log) QF LOAD 120 120°C 80°C 100 40°C 80 0°C –40° 100 1000 10000 LOAD (mA) 441312 G01 100mA 4.5 2 2.5 3 3.5 5 5.5 V (V) ...
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... TEMPERATURE (°C) Response to 800mA Load Step in <16μs CH1 = IN 100mV/DIV CH2 OUT 100mV/DIV CH4 I OUT 200mV/DIV 4μs/DIV 6 LTC4413-1/LTC4413-2 R and (Log) FWD FWD LOAD 250 600 120°C 80°C 500 40°C 200 0°C –40°C 400 R ...
Page 6
... LTC4413-1/LTC4413-2 TYPICAL PERFORMANCE CHARACTERISTICS ENB Turn-Off, 2μs to Disconnect IN from 180mA Load CH1 IN 1V/DIV CH2 OUT 1V/DIV CH3 ENB 1V/DIV CH4 I IN 100mV/DIV 441312 G19 4μs/DIV Overvoltage Thresholds vs Temperature (LTC4413-2 Only) 6.4 6.2 OVP RISING 6.0 5.8 OVP FALLING 5.6 5.4 5.2 5.0 – 120 TEMPERATURE (°C) ...
Page 7
... Limit slew rate on this pin to less than 2.5V/μs. OUTB (Pin 6): Secondary Ideal Diode Cathode and Output of the LTC4413-1/LTC4413-2. Bypass OUTB with a high (1mΩ min) ESR ceramic capacitor of at least 4.7μF . This pin must be left fl oating when not in use. Limit slew rate on this pin to less than 2.5V/μ ...
Page 8
... LTC4413-1/LTC4413-2 BLOCK DIAGRAM INA 1 OVER CURRENT – 0.5V ENA ENBA + 2 3μA GND 3 INB 5 OVER CURRENT – 0.5V ENB ENBB + 4 3μA 8 – + – UVLO ENA ENB – V GATEA OUTA (MAX OFF OUTB (MAX) AENA A + – – + – – V GATEB + V OFF BENA B + – ...
Page 9
... OPERATION The LTC4413-1/LTC4413-2 are described with the aid of the Block Diagram. Operation begins when the power source rises above the undervoltage lockout (UVLO) INA INB voltage of 2.4V and the corresponding control pin ENBA or ENBB is low. If only the voltage at the V ...
Page 10
... During an overcurrent condition, the output voltage droops as the load current exceeds the amount of current that the LTC4413-1/LTC4413-2 can supply. At the time when an overcurrent condition is fi rst detected, the LTC4413-1/ LTC4413-2 take some time to detect this condition before reducing the current to I ...
Page 11
... The microcontroller’s analog inputs (perhaps with the aid of a resistor voltage divider) monitor each supply input and the LTC4413-1 status, and then commands the LTC4413-1 MP2 through the two ENBA/ENBB control inputs. IRLML6402 OPTIONAL 6 ...
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... Automatic Switchover from a Battery to a Wall 6.2V BATTERY TO LOAD CHARGER INPUT R STAT OVP 560k 10nF STAT C1: C1206C106K8PAC C2: C0403C103K8PAC C : C1206C475K8PAC OUT 1 INA OUTA IDEAL 2 ENBA 470k LTC4413-1 STAT IS HIGH 3 9 WHEN BAT1 IS GND STAT CHARGING 4 ENBB 5 INB OUTB 6 + IDEAL BAT2 441312 F05 Figure 5 LOAD BAT1 LOAD 441312fb ...
Page 13
... MP1 is turned off. Soft-Start Overvoltage Protection ENB BAT LTC4059 + V PROG Li-Ion CC MP1 100k IRLML6402 Li/CC GND D1 C1 OPTIONAL 10μF DFLZ6V2-7 C2 10nF Figure 6 LTC4413-1/LTC4413-2 STAT 9 STAT R STAT 560k INA OUTA LOAD IDEAL 2 ENBA LTC4413-2 4 ENBB 3 GND 5 INB ...
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... LTC4413-1/LTC4413-2 APPLICATIONS INFORMATION In the event that a low power external PFET is used for the external overvoltage protection device, care must be taken to limit the power dissipation in the external PFET. The operation of this circuit is identical to the “Automatic Switchover from a Battery to a Wall Adapter” application shown on the fi ...
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... DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LTC4413-1/LTC4413 0.115 0.38 ± 0.10 TYP 6 10 ...
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... LTC4413-1/LTC4413-2 TYPICAL APPLICATION Automatic Switchover from a Battery to a Wall Adapter with Soft-Start Overvoltage Protection WALL ADAPTER INPUT 10nF 0.1μF 1Ω RELATED PARTS PART NUMBER DESCRIPTION LTC1558/LTC1559 Backup Battery Controller with Programmable Output LTC1998 2.5μA, 1% Accurate Programmable Battery Detector LTC4054 800mA Standalone Linear Li-Ion Battery Charger with ...