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参数资料
| 型号： | TPS61170DRVTG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.44 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 2 X 2 MM, GREEN, PLASTIC, SON-6 |
| 文件页数： | 23/29页 |
| 文件大小： | 689K |
| 代理商： | TPS61170DRVTG4 |
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SLVS789C
– NOVEMBER 2007 – REVISED APRIL 2011
ELECTRICAL CHARACTERISTICS
VIN = 3.6 V, CTRL = VIN, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VI
Input voltage range, VIN
3.0
18
V
IQ
Operating quiescent current into VIN
Device PWM switching no load
2.3
mA
ISD
Shutdown current
CRTL=GND, VIN = 4.2 V
1
μA
UVLO
Under-voltage lockout threshold
VIN falling
2.2
2.5
V
Vhys
Under-voltage lockout Hysteresis
70
mV
ENABLE AND REFERENCE CONTROL
V(CTRLh)
CTRL logic high voltage
VIN = 3 V to 18 V
1.2
V
V(CTRL)
CTRL logic low voltage
VIN = 3 V to 18 V
0.4
V
R(CTRL)
CTRL pull down resistor
400
800
1600
k
toff
CTRL pulse width to shutdown
CTRL high to low
2.5
ms
tes_det
Easy Scale detection time(1)
CTRL pin low
260
μs
tes_delay
Easy Scale detection delay
100
μs
tes_win
Easy Scale detection window time
1
ms
VOLTAGE AND CURRENT CONTROL
VREF
Voltage feedback regulation voltage
1.204
1.229
1.254
V
Voltage feedback regulation voltage under
V(REF_PWM)
VFB = 492 mV
477
492
507
mV
reprogram
IFB
Voltage feedback input bias current
VFB = 1.229 V
200
nA
fS
Oscillator frequency
1.0
1.2
1.5
MHz
Dmax
Maximum duty cycle
VFB = 100 mV
90%
93%
tmin_on
Minimum on pulse width
40
ns
Isink
Comp pin sink current
100
μA
Isource
Comp pin source current
100
μA
Gea
Error amplifier transconductance
240
320
400
μmho
Rea
Error amplifier output resistance
5 pF connected to COMP
6
M
fea
Error amplifier crossover frequency
5 pF connected to COMP
500
kHz
POWER SWITCH
VIN = 3.6 V
0.3
0.6
RDS(on)
N-channel MOSFET on-resistance
VIN = 3.0 V
0.7
ILN_NFET
N-channel leakage current
VSW = 35 V, TA = 25°C
1
μA
OC and SS
ILIM
N-Channel MOSFET current limit
D = Dmax
0.96
1.2
1.44
A
ILIM_Start
Start up current limit
D = Dmax
0.7
A
tHalf_LIM
Time step for half current limit
5
ms
tREF
Vref filter time constant
180
μs
tstep
VREF ramp up time
213
μs
(1)
EasyScale communication is allowed immediately after the CTRL pin has been low for more than tes_det. To select EasyScale mode,
the CTRL pin must be low for more than tes_det the end of tes_win.
Copyright
2007–2011, Texas Instruments Incorporated
3
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