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TPS62700YZF Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza TPS62700YZF
Descripción Electrónicos  2 MHz 650 mA Step Down Converter for RF Power Amplifiers in Tiny 8-pin WCSP Package
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS62700YZF Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS62700
SLVS784A – DECEMBER 2007 – REVISED MARCH 2008
PVIN = AVIN = VIN = 3.6 V, EN = AVIN, TA = TJ = –40°C to 85°C typical values are at TA = 25°C (unless otherwise noted), see
parameter measurement information
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY
AVIN, PVIN
Input voltage range
IOUT max = 650 mA
2.5
6
V
IOUT
Output current
VIN 2.5 to 6 V
650
mA
IQ
Operating quiescent current into AVIN
VCON = 1 V, FB = 0 V, VIN = 3.6V, device not
0.1
0.3
mA
switching (1)
ISD
Shutdown current
EN = SW=VCON = AGND, AVIN = PVIN = 3.6V
0.01
2
µA
ENABLE
VIH
High Level Input Voltage, EN
1.2
VIN
V
VIL
Low Level Input Voltage, EN
0
0.4
V
IIN
Input bias Current, EN
EN = AVIN
5
10
µA
CONTROL INPUT VCON
VVCON, MIN
VCON Threshold forcing VFB, MIN
Falling VCON signal
0.484
0.52
0.556
V
VVCON, MAX
VCON Threshold forcing VFB,MAX
Rising VCON signal
1.211
1.236
1.26
V
ZVCON
VCON Input resistance
100
k
CVCON
VCON Input capacitance
VCON = 1 V, f = 100 kHz
20
pF
IIN VCON
VCON Input current
10
µA
Gain
Internal Gain VOUT/VCON
0.556 V
≤ VCON ≤ 1.208 V
2.5
POWER SWITCH
TA = TJ = 25°C
100
140
230
High side MOSFET on-resistance
PVIN = VGS = 3.6 V
m
TA = TJ = –40°C to 85°C
270
RDS(ON)
TA = TJ = 25°C
180
200
330
Low-Side MOSFET on-resistance
PVIN = VGS = 3.6 V
m
TA = TJ = –40°C to 85°C
430
Forward current limit MOSFET high side
ILIMF
PVIN = 3.6 V
935
1100
1200
mA
and low side
OSCILLATOR
fSW
Oscillator frequency
3 V < VIN < 5 V
1.7
2.0
2.3
MHz
FEEDBACK/OUTPUT
VFB, MIN
Minimum feedback voltage
VCON = 0.4 V
(2) (3)
1.25
1.3
1.35
V
VFB
Feedback voltage
VCON = 1.1 V
(2) (3)
2.693
2.75
2.835
V
VFB, MAX
Maximum feedback voltage
VCON = 1.4 V
(2) (3)
3.028
3.09
3.15
V
Linearity
Linearity in VCON range 0.556 V to 1.208 V
(2) (3)
–2
2
%
VOUT Rise time from 1.3 V to 3.09 V
VIN = 4.2 V, COUT = 4.7 µF, L = 3.3 µH, RLOAD = 5 Ω
20
30
(3) (4)
TRESPONSE
µs
VOUT Fall time from 3.09 V to 1.3 V
VIN = 4.2 V, COUT = 4.7 µF, L = 3.3 µH, RLOAD = 10 Ω
20
30
(3) (4)
T_ON
Start-up Time
From Enable low to high transition until VOUT reaches
190
300
µs
3.09 V, COUT = 4.7 µF, L = 3.3 µH, IOUT ≤ 1 mA
η
Efficiency (L = 3.3
µH, DCR ≤ 100mΩ)
VIN = 3.6 V, VOUT = 1.3 V, IOUT = 150 mA
(5) (3)
87
%
VIN = 3.6 V, VOUT = 3.09 V, IOUT = 400 mA
(5) (3)
95
VOUT_RIPPLE
Ripple voltage, PWM mode
VIN = 3 V to 4.5 V, VOUT = 1.3 V,
10
mVp-p
IOUT = 10 mA to 400 mA
(3)
Line_tr
Line transient response
VIN = 600 mV step, over VIN range 3 V to 5.5 V TRISE =
50
mVpk
TFALL = 10 µs, VOUT = 1.3 V,
IOUT = 100 mA
(3)
Load_tr
Load transient response
VIN = 3.1/3.6/4.5 V, VOUT = 1.3 V,
50
mVpk
transients 0 mA to 100 mA,
TRISE = TFALL = 10 µs
(3)
(1)
Device operating in 100% duty cycle mode
(2)
2.5 V
≤ VIN ≤ 6 V, with VIN_MIN = VOUT + 0.5 V
(3)
The voltage need to be measured on the COUT using appropriate measurement probes. For the measurements, a proper PCB layout
and usage of recommended inductors and capacitors are essential. See parameter measurement information.
(4)
Rise/Fall time valid for VFB within specified limits.
(5)
Using appropriate inductor with R (DCR) less than 100 mΩ
Copyright © 2007–2008, Texas Instruments Incorporated
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