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參數資料
| 型號： | TPS62270DRVR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 0.84 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, 0.80 MM HEIGHT, GREEN, PLASTIC, SON-6 |
| 文件頁數： | 18/24頁 |
| 文件大小： | 882K |
| 代理商： | TPS62270DRVR |
ELECTRICAL CHARACTERISTICS
www.ti.com ........................................................................................................................................... SLVS799C – NOVEMBER 2007 – REVISED JANUARY 2009
Over full operating ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply
for condition VIN = EN = 3.6V. External components CIN = 4.7F 0603, COUT = 10F 0603, L = 2H, see the parameter
measurement information.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY
VIN
Input voltage range
2
6
V
2.5 V
≤ VIN ≤ 6 V
400
IOUT
Output current
mA
2 V
≤ VIN ≤ 2.5 V
150
IOUT = 0 mA, device not switching
15
IQ
Operating quiescent current
A
IOUT = 0 mA, device switching with no load,
18
VOUT = 1.15V
ISD
Shutdown current
EN = GND
0.1
1
A
Falling
1.85
UVLO
Undervoltage lockout threshold
V
Rising
1.95
ENABLE, VSEL
VIH
High level input voltage, EN, VSEL
2 V
≤ VIN ≤ 6 V
1
VIN
V
VIL
Low Level Input Voltage, EN, VSEL
2 V
≤ VIN ≤ 6 V
0
0.4
V
IIN
Input bias Current, EN, VSEL
EN, VSEL = GND or VIN
0.01
1.0
A
POWER SWITCH
High side MOSFET on-resistance
VIN = VGS = 3.6V, TA = 25°C
240
480
m
RDS(on)
Low side MOSFET on-resistance
VIN = VGS = 3.6V, TA = 25°C
180
380
m
Forward current limit MOSFET high-side and
ILIMF
VIN = VGS = 3.6 V
0.56
0.7
0.84
A
low side
Thermal shutdown
Increasing junction temperature
140
TSD
°C
Thermal shutdown hysteresis
Decreasing junction temperature
20
OSCILLATOR
fSW
Oscillator frequency
2 V
≤ VIN ≤ 6 V
2
2.25
2.5
MHz
OUTPUT
1.16
VSEL = 1
1.13
1.15
7
PWM operation, 2 V
≤ VIN ≤ 6 V,
TPS62270
FB pin connected to VOUT
(1)
0.88
0.91
VSEL = 0
0.9
6
4
VOUT
Output voltage PWM
V
VSEL = 1
3.23
3.3
3.37
PWM operation, 2 V
≤ VIN ≤ 6 V,
TPS62272
FB pin connected to VOUT
(1)
VSEL = 0
2.06
2.1
2.14
VSEL = 1
3.23
3.3
3.37
PWM operation,
TPS62273
FB pin connected to VOUT
(1)
VSEL = 0
2.45
2.5
2.55
VSEL = 1
1.16
TPS62270
VSEL = 0
0.91
VSEL = 1
3.34
Output voltage in PFM mode, voltage
VOUT
TS62272
V
positioning
VSEL = 0
2.12
VSEL = 1
3.34
TPS62273
VSEL = 0
2.53
tStart
Start-up time
Time from active EN to reach 95% of VOUT
500
s
tRamp
VOUT ramp up time
Time to ramp from 5% to 95% of VOUT
250
s
Ilkg
Leakage Current into SW pin
VIN = 3.6 V, VIN = VOUT = VSW, EN = GND
(2)
0.1
1
A
(1)
For VIN = VOUT + 0.6 V
(2)
In fixed output voltage versions, the internal resistor divider network is disconnected from FB pin.
Copyright 2007–2009, Texas Instruments Incorporated
3
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