Os motores de busca de Datasheet de Componentes eletrônicos |
|
LM3639A Folha de dados(PDF) 4 Page - Texas Instruments |
|
|
LM3639A Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 28 page LM3639A SNVS964 – MARCH 2013 www.ti.com ELECTRICAL CHARACTERISTICS (1) (2) Limits in standard typeface are for TA = +25°C. Limits in boldface type apply over the full operating ambient temperature range ( −40°C ≤ TA ≤ +85°C). Unless otherwise specified, VIN = 3.6V. Symbol Parameter Test Conditions Min Typ Max Unit VIN Input Voltage Range 2.5 3.6 5.5 V ISHDN Shutdown Supply Current Device Shutdown, EN = GND 1 3.5 µA Device Disabled via I2C ISB Standby Supply Current 1 4 EN = VIN Low Voltage Boost Specifications (Flash Driver) 750 mA Flash −7% 1.5 +7% A Current Setting 28.125 mA Torch IFLED1 + IFLED2 Current Source Accuracy 2.7V ≤ VIN ≤ 5.5V Current Setting, −10% 56.25 +10% mA per current source For 750 mA Flash Current Setting 315 VHR1, VHR2 Regulated Headroom Voltage mV For 28.125 mA Torch Current Setting 180 ON Threshold 4.87 5 5.10 Output Over-Voltage VOVP V Protection Trip Point OFF Threshold 4.71 4.88 4.98 RPMOS PMOS Switch On-Resistance IPMOS = 1A 85 m Ω RNMOS NMOS Switch On-Resistance INMOS = 1A 75 −12% 1.7 12% −12% 1.9 12% ICL Switch Current Limit VIN = 3.6V A −12% 2.5 12% −12% 3.1 12% Input Voltage Monitor VIVM VIN Falling −4% 2.5 4% V Threshold fSW Switching Frequency 2.5V ≤ VIN ≤ 5.5V 3.64 4.00 4.36 MHz Device Not Switching IQ Quiescent Supply Current 0.6 2 mA Pass Mode, Backlight Disabled Flash to Torch LED Current TX low to High, ILED1,2 = 750 mA to tTX 4 µs Settling Time 23.44 mA High Voltage Boost Specification (Backlight Driver) Output Current Regulation 2.7V ≤ VIN ≤ 5.5V, Full Scale Current = IBLED1, IBLED2 −7% 19 7% mA (BLED1 or BLED2) 19 mA, Brightness Register = 0xFF BLED1 to BLED2 Current 2.7V ≤ VIN ≤ 5.5V, Full Scale Current = IMATCH_HV 1 2.25 % Matching(3) 19 mA, Brightness Register = 0xFF Regulated Current Sink VREG_CS ILED = 19mA 400 Headroom Voltage mV Current Sink Minimum VHR_MIN ILED = 95% of ILED = 19 mA 130 Headroom Voltage RDSON NMOS Switch On Resistance ISW = 500 mA 230 m Ω ICL_BOOST NMOS Switch Current Limit VIN = 3.6V −10% 1 10% A ON Threshold, 2.7V ≤ VIN ≤ 5.5V, 38.4 40.0 41.4 Output Over-Voltage OVP select bits = 11 VOVP V Protection Hysteresis 1 2.5V ≤ VIN ≤ 5.5V, fSW Switching Frequency Boost Frequency 465 500 535 kHz Select Bit = '0' DMAX Maximum Duty Cycle 94 % (1) All voltages are with respect to the potential at the GND pin. (2) JESD ESD tests are applied at the ASIC level. The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin. (3) Matching (%)= 100 × (|(ILED1 - ILED2 )| / (ILED1 + ILED2)) 4 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: LM3639A |
Nº de peça semelhante - LM3639A |
|
Descrição semelhante - LM3639A |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |