Datasheet LTC4121, LTC4121-4.2 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 40V 400mA Synchronous Step-Down Battery Charger |
| Pages / Page | 30 / 10 — BLOCK DIAGRAM. Diagram. Block. Figure |
| File Format / Size | PDF / 383 Kb |
| Document Language | English |
BLOCK DIAGRAM. Diagram. Block. Figure
Model Line for this Datasheet
Text Version of Document
LTC4121/LTC4121-4.2
BLOCK DIAGRAM
4121 F01 R NOM 10k 10k T VCC C INT 2.2µF C BAT 22µF C BST 22nF L SW 22µH R FB1 R FB2 R PROG 3.01k V CC SW BAT FB GND FBG INT BOOST PROG CHGSNS R SNS 0.3Ω V FB(REG) LDO 588k ENABLE V CC + – V CC + – INT C-EA INT V-EA DZ ENABLE V CC INT M V CC
Diagram
PW INT I TH
Block
BAT 2.21V IN V CC gm • V MP(OS)
1.
INT + – – + K F +V
Figure
SHUTDOWN T V CC DAC INT ENABLE HOT COLD DISABLE DUVLC LOWBA ENABLE T + – V CC V CC NTC I MPP INT CNTRL INT + – + – + – T MP 9R R 0.9 IN BAT 2.45V IN T T IN-80mV • V LTC4121 IN RUN FREQ FAUL CHRG NTC MPP K F T1 T2 R RUN1 R RUN2 R MPP R MPP IN C IN 10µF • V K R D1 + + + 4121fc 10 For more information www.linear.com/LTC4121 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Applications Examples Package Description Typical Application Related Parts
BLOCK DIAGRAM
4121 F01 R NOM 10k 10k T VCC C INT 2.2µF C BAT 22µF C BST 22nF L SW 22µH R FB1 R FB2 R PROG 3.01k V CC SW BAT FB GND FBG INT BOOST PROG CHGSNS R SNS 0.3Ω V FB(REG) LDO 588k ENABLE V CC + – V CC + – INT C-EA INT V-EA DZ ENABLE V CC INT M V CC
Diagram
PW INT I TH
Block
BAT 2.21V IN V CC gm • V MP(OS)
1.
INT + – – + K F +V
Figure
SHUTDOWN T V CC DAC INT ENABLE HOT COLD DISABLE DUVLC LOWBA ENABLE T + – V CC V CC NTC I MPP INT CNTRL INT + – + – + – T MP 9R R 0.9 IN BAT 2.45V IN T T IN-80mV • V LTC4121 IN RUN FREQ FAUL CHRG NTC MPP K F T1 T2 R RUN1 R RUN2 R MPP R MPP IN C IN 10µF • V K R D1 + + + 4121fc 10 For more information www.linear.com/LTC4121 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Applications Examples Package Description Typical Application Related Parts
