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参数资料
| 型号： | MAX1541ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/49页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR DIVIDER PWM 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 620kHz |
| 占空比： | 100% |
| 电源电压： | 2 V ~ 28 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 是 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 管件 |
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Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, V CC = V DD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T A = -40°C to +85°C , unless otherwise noted.)
(Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
High
V CC -
0.4V
Four-Level Input Logic Levels
TON, OVP/UVP, LSAT, SKIP ,
FBLANK
Open
3.15
3.85
V
REF
Low
1.65
2.35
0.5
Note 1: For the MAX1540A, the gate-driver input supply (V DD ) is internally connected to the fixed 5V linear-regulator output
(LDOOUT),
and the linear-regulator input supply (LDOIN) is internally connected to the battery voltage input (V+).
Note 2: When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error-comparator
threshold by 50% of the ripple. In discontinuous conduction ( SKIP = GND, light load), the output voltage has a DC regulation
level higher than the trip level by approximately 1.5% due to slope compensation.
Note 3: On-time and off-time specifications are measured from 50% point to 50% point at the DH_ pin with LX_ = GND, VBST_ = 5V,
and a 250pF capacitor connected from DH_ to LX_. Actual in-circuit times may differ due to MOSFET switching speeds.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(MAX1541 circuit of Figure 12, V IN = 12V, V DD = V CC = 5V, SKIP = GND, TON = REF, T A = +25°C, unless otherwise noted.)
100
OUT2 EFFICIENCY vs. LOAD CURRENT
(V OUT2 = 2.5V)
2.55
2.5V OUTPUT VOLTAGE (OUT2)
vs. LOAD CURRENT
100
OUT1 EFFICIENCY vs. LOAD CURRENT
(V OUT1 = 1.0V)
95
90
85
80
75
V IN = 7V
2.54
2.53
2.52
95
90
85
80
75
SKIP = GND
SKIP = V CC
70
V IN = 12V
2.51
70
65
60
55
V IN = 20V
SKIP = GND
SKIP = V CC
2.50
2.49
SKIP = GND
SKIP = V CC
65
60
55
V IN = 7V
V IN = 12V
V IN = 20V
50
2.48
50
0.01
0.1
1
10
0
1
2
3
4
5
0.01
0.1
1
10
LOAD CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
10
______________________________________________________________________________________
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| MAX1541ETL+ | 功能描述:DC/DC 开关控制器 Dual Step-Down Ctlr w/Saturation Prot RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1541ETL+T | 功能描述:DC/DC 开关控制器 Dual Step-Down Ctlr w/Saturation Prot RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1541ETL-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1541EVKIT | 制造商:Maxim Integrated Products 功能描述:DUAL STEP-DOWN CONTROLLERS W. SATURATION PROT - Bulk |
| MAX15425EVKIT# | 功能描述:显示开发工具 Eval Kit for the MAX15425 (Intel CPU Controller) RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V |
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