參數(shù)資料
型號： MAX8554EEE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
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： SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, MO-137AB, QSOP-16
文件頁數(shù)： 6/24頁
文件大?。?/td> 483K
代理商： MAX8554EEE
M
4.5V to 28V Input, Synchronous PWM Buck Controllers
for DDR Termination and Point-of-Load Applications
6
_______________________________________________________________________________________
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
= 0, ILIM = VL, PGND
= LX = POK = GND, BST = VL,
T
A
= -40
°
C to +85
°
C
, unless otherwise specified.) (Note 3)
PARAMETER
CONDITIONS
REFERENCE
Reference Output Voltage
V
V+
= V
VL
= +4.5 to +5.5V, I
REF
= 0
Reference Load Regulation
V
V+
= V
VL
= +5V, I
REF
= 0 to 50μA
Reference UVLO
V
V+
= V
VL
= +5V, reference rising, hysteresis = 27mV
VTTR
VTTR Output Voltage Range
I
VTTR
= -5mA to +5mA
I
VTTR
= -25mA to +25mA, V
REFIN
= +1.8V
VTTR Output Accuracy
I
VTTR
= -25mA to +25mA, V
REFIN
= +3.6V
SOFT-START
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
MIN
MAX
UNITS
1.97
2.03
10
1.7
V
mV
V
1.5
0
1.8
50.5
51
50.5
V
49.5
49
49.5
% V
RE FIN
ILIM Ramp Period
0.8
3.0
ms
Output Predischarge Period
0.8
3.0
ms
OSCILLATOR
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
420
On-Time
MAX8553, V
VTT
= +1.25V
(Note 2)
μs
On-Time
MAX8554, V
OUT
= +2.5V
(Note 2)
μs
Off-Time
CURRENT LIMIT
(Note 2)
ns
LX to PGND, ILIM = VL
LX to PGND, R
ILIM
= 100k
LX to PGND, R
ILIM
= 400k
LX to PGND, ILIM = VL, with respect to positive
current-limit threshold
80
30
150
115
65
230
Current-Limit Threshold (Positive
Direction)
mV
Current-Limit Threshold (Negative
Direction)
-130
-90
%
ILIM Input Current
FAULT DETECTION
μA
MAX8553 (V
REFIN
> +1V)
MAX8553 (V
REFIN
≤
+1V)
MAX8554
+6V < V
V+
< +28V, 1mA < I
VL
< 35mA
ESR < 100m
57
63
%
0.576
0.696
4.80
2.2
0.624
0.744
5.33
35
Overvoltage Threshold
V
VL REGULATOR
Output Voltage
RMS Output Current
Bypass Capacitor
V
mA
μF
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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 4.5-28V Input Synch Buck Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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
MAX8555AETB 制造商:Maxim Integrated Products 功能描述:LOW-COST, HIGH-RELIABILITY, 0.5V TO 3.3V O-RI - Rail/Tube
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