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LM3279 データシート(PDF) 6 Page - Texas Instruments |
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LM3279 データシート(HTML) 6 Page - Texas Instruments |
6 / 37 page LM3279 SNVS970C – MARCH 2013 – REVISED OCTOBER 2014 www.ti.com Electrical Characteristics (1) (continued) Limits are for TA = TJ = 25°C, and specifications apply to the LM3279 Typical Application Circuits with: PVIN = 3.8 V, VIO or EN = 1.8 V, unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Gain Internal gain (4) 0.167 V ≤ VCON ≤ 1.4 V 3 V/V ICON VCON pin input leakage EN = 3.8 V –1 1 µA Leakage into VOUT pin of the buck- EN = 0, VOUT ≤ 4.2 V, VBATT ≤ 5.5 V IOUT_LEAKAGE 5 boost Max limits = −30°C ≤ TJ = TA ≤ 85°C (4) When using analog control (EN = HIGH) to calculate VOUT, use the following equation: VOUT = VCON × 3. 6.6 System Characteristics The following spec table entries are specified by design and verifications, providing the component values in the typical application circuits are used: L = 1.5 µH, DFE201610C-1R5M (2016)/TOKO; CIN and COUT each = 10 µF 6.3 V, C105A106MQ5NUNC (0402)/Samsung; PA decoupling cap emulation = 0.47 µF, GRM033R60J474ME90 (0201)/Murata. These parameters are not verified by production testing. Typical limits are TA = 25°C. Min and Max limits apply over the full ambient temperature range ( −30°C ≤ TA ≤ 85°C) and over the VIN range = 2.7 V to 5.5 V, unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VBATT = 3.8 V, VIO = 1.8 V, RFFE write VSET = 3.42 V (VSET_CTRL = 5Fh), IOUT = 0mA Turn-on time (time for output TON 35 50 µs to reach 0V →90% × 3.4 V) EN = L to H, VBATT = 3.8 V, VCON = 1.14 V, IOUT = 0 mA VBATT ≥ 3 V, VOUT = 3.8 V 750 IOUT_MAX Max output current mA VBATT ≥ 3.2 V, VOUT = 4.2 V 650 Boost (% M4 on) 50% DMAX Maximum duty cycle Buck (% M1 on) 100% PFM: VOUT = 0.6V, PVIN = 3.7 V FOSC_PFM Internal oscillator frequency 63 kHz IOUT = 13 mA Half speed readback SCLK = 13 MHz, not including CL Load capacitance LM3279 capacitance. 10 50 pF TA = 25°C CVCON VCON input capacitance VCON = 1V, Test frequency = 100 kHz, TA = 25°C 10 pF VCON_LIN VCON linearity 0.167 V ≤ VCON ≤ 1.4 V –2.5% 2.5% VIO VIO I/O voltage level 1.8V Bus, TA = 25°C 1.65 1.8 1.95 V VBATT ≥ 3.2 V, 0.6 ≤ VOUT ≤ 4.2 V, Ripple voltage 15 50 0 mA ≤ IOUT ≤ 430 mA, TA = 25°C VO_RIPPLE PFM ripple VOUT = 0.6 V, IOUT = 5mA 40 mV Ripple voltage in mode VBATT = 3 V to 5 V, Tr = Tf = 30s 50 transition 3.3 V ≤ VOUT ≤ 4.2 V VBATT = 3.2 V to 4.9 V, VOUT = 3.5 V, Line regulation 10 PWM Operation ΔVOUT mV IOUT = 0 mA to 500 mA, VBATT = 3.2 V to 4.9 V, Load regulation 20 PWM Operation VBATT = 3.6 V to 4.2 V, Tr = Tf = 10 µs, –100 100 VOUT = 3.5 V, RLOAD = 11.4 Ω, PWM Line_tr Line transient response mV VBATT = 3.6 V to 4.2 V, Tr = Tf = 10 µs, –5 5 VOUT = 0.8 V, RLOAD = 20 Ω, PFM IOUT = 1 mA to 200 mA, Tr = Tf = 1 µs, –100 100 VBATT = 4.2 V, VOUT = 3.5 V, PWM Load_tr Load transient response mV IOUT = 10 mA to 90 mA, Tr = Tf = 1 µs, –10 10 VBATT = 4.2 V, VOUT = 0.8 V, PFM 6 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Product Folder Links: LM3279 |
同様の部品番号 - LM3279_15 |
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同様の説明 - LM3279_15 |
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