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參數資料
型號: TPS40200MDREPG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝: GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁數: 23/43頁
文件大小: 1069K
代理商: TPS40200MDREPG4
www.ti.com
ELECTRICAL CHARACTERISTICS
SGLS371 – JANUARY 2007
–55
°C < T
A = TJ < 125°C, VDD = 12 V, fOSC = 100 kHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Voltage Reference
COMP = FB, TJ = 25°C
689
696
702
TJ = 25°C
686
696
703
VFB
Feedback voltage
mV
4.5 V < VDD < 52 V –40°C < TJ < 125°C
679
696
710
–55
°C < T
J < 125°C
675
696
710
Gate Driver
Isrc
Gate driver pullup current
125
300
mA
Isnk
Gate driver pulldown current
200
300
mA
VGATE
Gate driver output voltage
VGATE = (VDD – VGDRV), for 12 V < VDD < 52 V
6
8
10
V
Quiescent Current
FOSC = 300 kHz, Driver not switching,
Iqq
Device quiescent current
1.5
3
mA
4.5 V < VDD < 52 V
Undervoltage Lockout (UVLO)
VUVLO(on)
Turnon threshold
3.8
4.25
4.5
V
VUVLO(off)
Turnoff threshold
4.05
VUVLO(HYST) Hysteresis
110
200
275
mV
Soft Start
RSS(chg)
Internal soft-start pullup resistance
65
105
170
k
Internal soft-start pulldown
RSS(dchg)
190
305
485
k
resistance
VSSRST
Soft-start reset threshold
100
150
200
mV
Overcurrent Protection
0
°C < T
J < 125°C
65
100
140
VILIM
Overcurrent threshold
4.5 V < VDD < 52 V –40°C < TJ < 125°C
55
100
140
mV
–55
°C < T
J < 125°C
35
100
150
OCDF
Overcurrent duty cycle(1)
2
%
VILIM(rst)
Overcurrent reset threshold
100
150
200
mV
Oscillator
Oscillator frequency range(1)
35
500
FOSC
RRC = 200 k, CRC = 470 pF
85
100
115
kHz
Oscillator frequency
RRC = 68.1 k, CRC = 470 pF
255
300
345
12 V < VDD < 52 V
–9
0
Frequency line regulation
%
4.5 V < VDD < 12 V
–20
0
VRMP
Ramp amplitude
4.5 V < VDD < 52 V
VDD÷ 10
V
Pulse-Width Modulator
VDD = 12 V
200
500
tMIN
Minimum controllable pulse width
ns
VDD = 30 V
100
200
FOSC = 100 kHz, CL = 470 pF
93
95
DMAX
Maximum duty cycle
%
FOSC = 300 kHz, CL = 470 pF
87
93
Modulator and power-stage
KPWM
8
10
12
V/V
dc gain
Error Amplifier
IIB
Input bias current
100
250
nA
AOL
Open-loop gain(1)
60
80
dB
GBWP
Unity gain bandwidth(1)
1.5
3
MHz
ICOMP(src)
Output source current
VFB = 0.6 V, COMP = 1 V
100
250
A
(1)
By design only. Not tested in production.
3
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