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参数资料
| 型号： | MAX668EUB+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.8V to 28V Input, PWM Step-Up Controllers in µMAX |
| 中文描述： | SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | COMPACT, UMAX-10 |
| 文件页数： | 11/18页 |
| 文件大小： | 289K |
| 代理商： | MAX668EUB+T |
MAX668/MAX669
1.8V to 28V Input, PWM Step-Up
Controllers in MAX
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC = LDO = 5V, ROSC = 200k, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
VCC to GND ..........................................................-0.3V to +30V
PGND to GND....................................................................±0.3V
SYNC/SHDN to GND .............................................-0.3V to +30V
EXT, REF to GND.....................................-0.3V to (VLDO + 0.3V)
LDO, FREQ, FB, CS+ to GND ................................ -0.3V to +6V
LDO Output Current...........................................-1mA to +20mA
REF Output Current..............................................-1mA to +1mA
LDO Short Circuit to GND .........................................Momentary
REF Short Circuit to GND ..........................................Continuous
Continuous Power Dissipation (TA = +70°C)
10-Pin MAX (derate 5.6mW/°C above +70°C) ..........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering,10sec) ..............................+300°C
85
100
115
425
500
575
225
250
275
ROSC = 200k ±1%
Oscillator Frequency
Oscillator
1.0
1.1
1.2
Rising edge, 1% hysteresis
REF Undervoltage Lockout Threshold
-2
-10
REF load = 0 to 50A
REF Load Regulation
1.225
1.250
1.275
No load, CREF = 0.22F
REF Output Voltage
2.40
2.50
2.60
Sensed at LDO, falling edge,
hysteresis = 1%, MAX668 only
Undervoltage Lockout Threshold
2.65
5.50
3V
≤ VCC ≤ 28V
(includes LDO dropout)
4.50
5.00
5.50
LDO Output Voltage
Reference and LDO Regulators
328
MAX668
PWM Controller
Input Voltage Range, VCC
3.5
6
SYNC/SHDN = GND, VCC = 28V
Shutdown Supply Current (VCC)
220
350
VFB = 1.30V, VCC = 3V to 28V
VCC Supply Current (Note 1)
0.2
1
CS+ forced to GND
CS+ Input Current
515
25
Idle Mode Current-Sense Threshold
2.7
5.5
Input Voltage Range with VCC Tied to LDO
1.225
1.250
1.275
FB Threshold
1
20
VFB = 1.30V
FB Input Current
85
100
115
Current-Limit Threshold
MIN
TYP
MAX
CONDITIONS
PARAMETER
kHz
V
mV
V
A
mV
nA
V
UNITS
MAX669
1.8
28.0
LDO load =
∞ to 400
5V
≤ VCC ≤ 28V
(includes LDO dropout)
ROSC = 500k ±1%
ROSC = 100k ±1%
0.013
Typically 0.013% per mV on CS+;
VCS+ range is 0 to 100mV for 0 to full
load current.
FB Threshold Load Regulation
%/mV
0.012
Typically 0.012% per % duty factor on
EXT; EXT duty factor for a step-up is:
100% (1 – VIN/VOUT)
FB Threshold Line Regulation
%/%
REFERENCE AND LDO REGULATORS
OSCILLATOR
PWM CONTROLLER
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相关代理商/技术参数 |
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| MAX668EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX668 MAX669 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX668EVKIT+ | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX668 MAX669 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX66901-K00# | 功能描述:射频识别变换器工具 MAX66901 RF Eval Kit RoHS:否 制造商:Olimex Ltd. 产品:RFID Readers 用于:ISO15693 |
| MAX66902-K00# | 功能描述:射频识别变换器工具 HF DEVELOPER KIT RoHS:否 制造商:Olimex Ltd. 产品:RFID Readers 用于:ISO15693 |
| MAX66903-K00 | 功能描述:射频识别变换器工具 MAX6100/20/40 Eval Kit RoHS:否 制造商:Olimex Ltd. 产品:RFID Readers 用于:ISO15693 |
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