參數(shù)資料
型號： TPS62205DBVR
英文描述： DC to DC Converter
中文描述： DC至DC轉換器
文件頁數(shù)： 5/23頁
文件大?。?/td> 358K
代理商： TPS62205DBVR
SLUS446B – MAY 2000 – REVISED DECEMBER 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, T
A
= –40 C to
85 C, T
A
= T
J
, typical values are at T
A
= 25 C, V
IN
= 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
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,
See Notes 1 and 2
300 kHz version,
VIN = 5 V,
490
kHz
Maximum sync frequency
Maximum sync. frequency
TPS62101,
See Notes 1 and 2
600 kHz version,
VIN = 5 V,
966
kHz
TPS62102,
See Notes 1 and 2
1 MHz version,
VIN = 5 V,
1.61
MHz
TPS62103,
See Notes 1 and 2
2 MHz version,
VIN = 5 V,
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)
SW PFET RDS(on)
SW NFET RDS(on)
SW PFET RDS(on)
SW output leakage
ISW = 500 mA
ISW = –500 mA
ISW = 500 mA
ISW = –500 mA
SW = 4.5V
VIN = 7.2 V
0.3
0.6
μ
A
A
VIN = 7.2 V
0.5
1
VIN = 3.6 V
0.6
1.2
VIN = 3.6 V
0.8
1.6
VIN = 9 V
–10
0
10
SW charge switch current limit 1
Terminates pulse
0.65
0.95
1.25
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
μ
A
μ
s
ns
SD/SYNC input current
SD/SYNC = 7.2 V
–1
0
1
Maximum synchronization pulse width
25
37
Minimum synchronization pulse width
50
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
μ
A
μ
A
MODE input-low current
Mode = 0 V
–20
–12
–5
MODE input-high current
NOTES:
1. Ensured by design. Not production tested.
2. Minimum synchronization frequency must be less than the natural running frequency.
Mode = 1.4 V
10
22
33
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