參數(shù)資料
型號(hào)： MAX8554
廠商： Maxim Integrated Products, Inc.
英文描述： 4.5V to 28V Input. Synchronous PWM Buck Controllers for DDR Termination and Point-of-Load Applications
中文描述： 4.5V至28V輸入、同步PWM buck控制器，適合DDR端接和負(fù)載點(diǎn)應(yīng)用
文件頁(yè)數(shù)： 3/24頁(yè)
文件大?。?/td> 483K
代理商： MAX8554
M
4.5V to 28V Input, Synchronous PWM Buck Controllers
for DDR Termination and Point-of-Load Applications
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
V+
= V
HSD
= +12V, V
EN/HSD
= V
REFIN
= +2.5V, V
EN
= +5V, C
VL
= 4.7μF, C
VTTR
= 1μF, C
REF
= 0.22μF, V
FSEL
= 0V, ILIM = VL,
PGND = LX = GND, BST = VL,
T
A
= 0
°
C to +85
°
C.
Typical values are at T
A
= +25
°
C, unless otherwise specified.)
PARAMETER
CONDITIONS
MIN
0.598
0.6
TYP
0.607
MAX
0.616
3.5
UNITS
V
V
%
FB Regulation Voltage
Output Adjust Range
VTT Line Regulation
MAX8554, V
OUT
= +2.5V, FSEL unconnected
MAX8554 (Note 1)
V
EN/HSD
±10%, V
VTT
= +1.25V, I
OUT
= 0A
MAX8554, V
HSD
±10%, V
OUT
= +2.5V,
I
OUT
= 0A, FSEL unconnected
0 < I
OUT
< +7A, V
VTT
= +1.25V
MAX8554, 0 < I
OUT
< +7A, V
OUT
= +2.5V,
FSEL unconnected
±0.325
FB Line Regulation
±0.325
%
VTT Load Regulation
0.2
%
FB Load Regulation
0.2
%
REFERENCE
Reference Output Voltage
Reference Load Regulation
Reference UVLO
VTTR
VTTR Output Voltage Range
V
V+
= V
VL
= +4.5 to +5.5V, I
REF
= 0
V
V+
= V
VL
= +5V, I
REF
= 0 to 50μA
V
V+
= V
VL
= +5V, reference rising, hysteresis = 27mV
1.97
2.00
2.03
10
1.7
V
mV
V
1.5
1.6
0
1.8
50.5
51
50.5
V
I
VTTR
= -5mA to +5mA
I
VTTR
= -25mA to +25mA, V
REFIN
= +1.8V
I
VTTR
= -25mA to +25mA, V
REFIN
= +3.6V
Rising temperature, typical hysteresis = 15
°
C
49.5
49
49.5
50
50
50
VTTR Output Accuracy
% V
RE FIN
Thermal Shutdown
SOFT-START
+160
°
C
ILIM Ramp Period
Ramps the ILIM trip threshold from 20% to 100% in
20% increments
Rising edge of EN/HSD to the start of internal digital
soft-start
0.8
1.7
3.0
ms
Output Predischarge Period
0.8
1.7
3.0
ms
OSCILLATOR
FSEL = VL
FSEL = unconnected
FSEL = REF
FSEL = GND
200
300
400
550
2.5
1.67
1.25
0.91
1.02
0.71
0.49
0.37
350
Oscillator Frequency
kHz
FSEL = VL
FSEL unconnected
FSEL = REF
FSEL = GND
FSEL = VL
FSEL unconnected
FSEL = REF
FSEL = GND
2.18
1.45
1.09
0.82
0.89
0.61
0.43
0.33
2.83
1.89
1.41
1.00
1.16
0.80
0.56
0.41
400
On-Time
MAX8553, V
VTT
= +1.25V
(Note 2)
μs
On-Time
MAX8554, V
OUT
= +2.5V
(Note 2)
μs
Off-Time
(Note 2)
ns
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX8554EEE 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8554EEE+ 功能描述:電流型 PWM 控制器 4.5-28V Input Synch Buck Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8554EEE+T 功能描述:電流型 PWM 控制器 4.5-28V Input Synch Buck Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8554EEE-T 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8554EVKIT 功能描述:電流型 PWM 控制器 Evaluation Kit for the MAX8553 MAX8554 RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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