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LM3263 Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce LM3263
Description  LM3263 High-Current Step-Down DC-DC Converter with MIPI짰 RF Front-End Control Interface
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3263 Fiches technique(HTML) 7 Page - Texas Instruments

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LM3263
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SNVS837A – JUNE 2013 – REVISED AUGUST 2013
SYSTEM CHARACTERISTICS (continued)
The following spec table entries are specified by design and verifications providing the component values in the Typical
Application Circuit are used (L = 1.5 µH, DCR = 120 m
Ω, TOKO DFE201610MT-1R5N, CIN = 10 µF, 6.3V, 0402, Samsung
CL05A106MP5NUN, COUT = 10 µF + 4.7 µF + 3 x 1.0 µF; 10V, 0402, Samsung CL05A106MP5NUN, CL05A475MPNRN;
6.3V, 0201, TDK, C0603X5R0J105M). These parameters are not verified by production testing. Min and Max values are
specified over the ambient temperature range TA = -30°C to 90°C. Typical values are specified at VBATT = 3.8V (= PVIN =
SVDD = PACB), VIO = 1.8V, SMPS_CFG = 20h, and TA =25°C unless otherwise stated.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VBATT = 3.8V, VSET= 0.5V,
52
56
IOUT = 5mA
VBATT = 3.8V, VSET= 1.8V,
78
82
IOUT = 10 mA
VBATT = 3.8V, VSET= 1.6V,
83
89
IOUT = 130 mA
VBATT = 3.8V, VSET = 2.5V,
η
Efficiency
90
94
%
IOUT = 250 mA
VBATT = 3.8V, VSET = 3.4V,
93
95
IOUT = 550 mA
VBATT = 3.8V, VSET = 1.0V,
81
85
IOUT = 400 mA, SMPS_CFG[5] = 0b
VBATT = 3.8V, VSET = 3.5V,
89
92
IOUT = 1900 mA, SMPS_CFG[5] = 0b
VBATT = 3.2V to 4.3V, VSET = 0.4V to
2.7 MHz PWM normal operation ripple
3.6V, RLOAD = 1.9Ω
(3)
1
3
SMPS_CFG[5]= 0b
VBATT = 3.2V, VSET = 3.0V,
Ripple voltage at pulse skipping condition
RLOAD = 1.9Ω
(3)
8
SMPS_CFG[5]= 0b
VRIPPLE
mVpp
VBATT = 3.2V, VSET = 3.0V,
IOUT = 40 mA
VBATT = 3.2V, VSET = 2.5V,
PFM ripple voltage
50
IOUT = 10 mA
VBATT = 3.2V, VSET< 0.5V,
IOUT = 5 mA
VBATT = 3.6V to 4.2V,
TR = TF = 10 µs,
Line_tr
Line transient response
50
VSET = 3.2V,
IOUT = 500 mA
mVpk
VSET = 3.0V,
TR = TF = 10 µs,
Load_tr
Load transient response
60
IOUT = 0A to 1.2A,
SMPS_CFG[5] = 0b
Max Duty
Maximum duty cycle
100
%
Cycle
VBATT = 3.2V, VSET = 1.0V,
100
160
IOUT = 10 mA
PFM_Freq
Minimum PFM frequency
KHz
VBATT = 3.2V, VSET = 0.5V,
34
55
IOUT = 5 mA
NSET
VSET DAC number of bits
Monotonic
8
Bits
Power-up time (time for RFFE bus active
TSETUP
VIO = Low to 1.65V
50
ns
after VIO applied)
TVIO-RST
VIO supply reset timing
VIO = 0.45V
10
µs
(3)
Ripple voltage should be measured at COUT electrode on a well designed PC board and using suggested inductor and capacitors.
Copyright © 2013, Texas Instruments Incorporated
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