參數(shù)資料
型號(hào)： TPS62103DG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 1.6 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO8
封裝： GREEN, SOIC-8
文件頁(yè)數(shù)： 23/27頁(yè)
文件大小： 537K
代理商： TPS62103DG4
TPS62100, TPS62101, TPS62102, TPS62103
MULTIMODE LOW POWER BUCK CONVERTER
SLUS446B – MAY 2000 – REVISED DECEMBER 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, TA = –40 C to
85 C, TA = TJ, typical values are at TA = 25 C, VIN = 7.2 V, MODE = 1 (constant frequency),
SD/SYNC = 0 V. (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Pulse Width Modulator Section
TPS62100,
300 kHz version,
VIN = 5 V
225
300
375
kHz
SW switching frequency
TPS62101,
600 kHz version,
VIN = 5 V
450
600
750
kHz
SW switching frequency
TPS62102,
1 MHz version,
VIN = 5 V
0.75
1
1.25
MHz
TPS62103,
2 MHz version,
VIN = 5 V
1.5
2
2.5
MHz
TPS62100,
300 kHz version,
VIN = 5 V,
See Notes 1 and 2
490
kHz
Maximum sync frequency
TPS62101,
600 kHz version,
VIN = 5 V,
See Notes 1 and 2
966
kHz
Maximum sync. frequency
TPS62102,
1 MHz version,
VIN = 5 V,
See Notes 1 and 2
1.61
MHz
TPS62103,
2 MHz version,
VIN = 5 V,
See Notes 1 and 2
2.5
MHz
Maximum duty cycle
COMP = 2.5 V
100%
Minimum duty cycle
COMP = 0 V
0%
Output Switch Section
SW NFET RDS(on)
ISW = 500 mA
VIN = 7.2 V
0.3
0.6
SW PFET RDS(on)
ISW = –500 mA
VIN = 7.2 V
0.5
1
SW NFET RDS(on)
ISW = 500 mA
VIN = 3.6 V
0.6
1.2
SW PFET RDS(on)
ISW = –500 mA
VIN = 3.6 V
0.8
1.6
SW output leakage
SW = 4.5V
VIN = 9 V
–10
0
10
A
SW charge switch current limit 1
Terminates pulse
0.65
0.95
1.25
A
SW charge switch current limit 2
Initiates soft-start,
See Note 1
0.75
1.15
1.55
A
SW current, light-load mode
Peak inductor current
112
160
208
mA
Shutdown and Synchronization Section
SD/SYNC threshold
0.5
1
2.3
V
SD/SYNC input current
SD/SYNC = 0 V
–100
0
100
nA
SD/SYNC input current
SD/SYNC = 7.2 V
–1
0
1
A
Maximum synchronization pulse width
25
37
s
Minimum synchronization pulse width
50
ns
Three–State Mode Control Input Section
Light-load MODE threshold
225
300
410
mV
Constant frequency MODE threshold
475
600
750
mV
Open circuit MODE voltage
375
450
510
mV
MODE input-low current
Mode = 0 V
–20
–12
–5
A
MODE input-high current
Mode = 1.4 V
10
22
33
A
NOTES:
1. Ensured by design. Not production tested.
2. Minimum synchronization frequency must be less than the natural running frequency.
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