參數(shù)資料
型號(hào)： TPS62400DRCTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 0.6 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁(yè)數(shù)： 34/43頁(yè)
文件大?。?/td> 1155K
代理商： TPS62400DRCTG4
SLVS681E – JUNE 2006 – REVISED APRIL 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.6V, VOUT = 1.8V, EN = VIN, MODE = GND, L = 2.2mH, COUT = 20mF, TA = –40°C to 85°C typical values are at
TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
2x
tL_LB
Low time low bit, logic 0 detection
Signal level on MODE/DATA pin < 0.4V
400
ms
tH_LB
tL_HB
Low time high bit, logic 1 detection
Signal level on MODE/DATA pin < 0.4V
2
200
ms
2x
tH_HB
High time high bit, logic 1 detection
Signal level on MODE/DATA pin is > 1.2V
400
ms
tL_HB
TEOS
End of Stream
TEOS
2
ms
Duration of acknowledge condition
tACKN
(MODE/DATE line pulled low by the
VIN 2.5V to 6V
400
520
ms
device)
tvalACK
Acknowledge valid time
2
ms
ttimeout
Timeout for entering power save mode
MODE/DATA Pin changes from high to low
520
ms
POWER SWITCH
P-Channel MOSFET on-resistance,
RDS(ON)
VIN = VGS = 3.6V
280
620
m
Converter 1,2
ILK_PMOS
P-Channel leakage current
VDS = 6.0V
1
mA
N-Channel MOSFET on-resistance
RDS(ON)
VIN = VGS = 3.6V
200
450
m
Converter 1,2
Includes N-Chanel leakage current,
ILK_SW1/SW2
Leakage current into SW1/SW2 pin
6
7.5
mA
VIN = open, VSW = 6.0V, EN = GND
(4)
OUTPUT 1
0.68
0.8
0.92
Forward Current Limit
ILIMF
2.5V
≤ VIN ≤ 6.0V
A
PMOS and NMOS
OUTPUT 2
0.85
1.0
1.15
TSD
Thermal shutdown
Increasing junction temperature
150
°C
Thermal shutdown hysteresis
Decreasing junction temperature
20
°C
OSCILLATOR
fSW
Oscillator frequency
2.5V
≤ VIN ≤ 6V
2.0
2.25
2.5
MHz
OUTPUT
VOUT
Adjustable output voltage range
0.6
VIN
V
Vref
Reference voltage
600
mV
Voltage positioning active,
MODE/DATA = GND,
1.01
VOUT (PFM)
–1.5%
2.5%
device operating in PFM mode,
VOUT
VIN = 2.5V to 5.0V (6) (7)
MODE/DATA = GND;
DC output voltage accuracy adjustable
device operating in PWM Mode,
–1%
0%
1%
and fixed output voltage(5)
VIN = 2.5V to 6.0V(7)
VIN = 2.5V to 6.0V, Mode/Data = VIN ,
VOUT(PWM)
Fixed PWM operation,
–1%
0%
1%
0mA < IOUT1 < 400mA ; 0mA < IOUT2 <
600mA(8)
DC output voltage load regulation
PWM operation mode
0.5
%/A
tStart up
Start-up time
Activation time to start switching(9)
170
ms
tRamp
VOUT Ramp UP time
Time to ramp from 5% to 95% of VOUT
750
ms
(4)
On pins SW1 and SW2 an internal resistor of 1M
is connected to GND.
(5)
Output voltage specification does not include tolerance of external voltage programming resistors
(6)
Configuration L typ 2.2mH, COUT typ 20mF, see parameter measurement information, the output voltage ripple in PFM mode depends on
the effective capacitance of the output capacitor, larger output capacitors lead to tighter output voltage tolerance.
(7)
In Power Save Mode, PWM operation is typically entered at IPSM = VIN/32.
(8)
For VOUT > 2V, VIN min = VOUT +0.5V
(9)
This time is valid if one converter turns from shutdown mode (EN2 = 0) to active mode (EN2 = 1) AND the other converter is already
enabled (e.g., EN1 = 1). In case both converters are turned from shutdown mode (EN1 and EN2 = low) to active mode (EN1 and/or
EN2=1) a value of typ 80 ms for ramp up of internal circuits needs to be added. After tStart the converter starts switching and ramps
VOUT.
4
Copyright 2006–2010, Texas Instruments Incorporated
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