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LM3269 bảng dữ liệu(PDF) 6 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Seamless-Transition Buck-Boost Converter
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LM3269 bảng dữ liệu(HTML) 6 Page - Texas Instruments

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LM3269
SNVS793D – NOVEMBER 2011 – REVISED MAY 2015
www.ti.com
System Characteristics (continued)
The following spec table entries are specified by design and verification provided the component values in the typical
application circuit are used (L = 2.2 µH, DCR = 110 m
Ω, MIPSZ2520D2R2/FDK; CIN = 10 µF, 6.3 V, C1608X5R0J106K/TDK
(0603); COUT = 4.7 µF, 6.3 V, C1608X5R0J475M/TDK (0603). These parameters are not verified by production testing.
Typical (TYP) limits are for TA = TJ = 25°C; minimum (MIN) and maximum (MAX) limits apply over the full operating ambient
temperature range (
−30°C ≤ TJ = TA ≤ 85°C) and over the VBATT = PVIN = 2.7 V to 5.5 V, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VBATT = 3.7 V, VOUT = 0.6 V, IOUT = 10 mA
61%
−30°C ≤ TJ = TA ≤ 85°C
VBATT = 3.7 V, VOUT = 1 V IOUT = 20 mA
78%
−30°C ≤ TJ = TA ≤ 85°C
VBATT = 3.7 V, VOUT = 1.4 V IOUT = 50 mA
85%
−30°C ≤ TJ = TA ≤ 85°C
η
Efficiency
VBATT = 3.7 V, VOUT = 2.7 V IOUT = 200 mA
95%
−30°C ≤ TJ = TA ≤ 85°C
VBATT = 3.7 V, VOUT = 3.3 V, IOUT = 480 mA
94%
−30°C ≤ TJ = TA ≤ 85°C
VBATT = 3 V, VOUT = 3.6 V, IOUT = 200 mA
95%
−30°C ≤ TJ = TA ≤ 85°C
6.7 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
EN = L to H, VBATT = 3.7 V, VOUT =
Turnon time (time for output to reach 3.5 V,
TON
35
50
µs
0V
→90% × 3.5 V)
IOUT = 0 mA
−30°C ≤ TJ = TA ≤ 85°C
VBATT = 3.7 V, VOUT = 0.6 V, IOUT =
FOSC_PFM
PFM operating frequency
63
kHz
13 mA
FOSC_PWM
Internal oscillator frequency
PWM
2.1
2.4
2.7
MHz
Boost
50%
DMAX
Maximum duty cycle
Buck
100%
VBATT = 3.2 V to 4.7 V,
VOUT = 1.4 V to 3 V, 0.1 µs <
VOUT_TR
VCON change to 90%
10
µs
Tr_VCON < 1 µs
RLOAD = 11.4 Ω
6
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Product Folder Links: LM3269


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