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| 型号： | MAX797HESE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 混合物 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 96% |
| 电源电压： | 4.5 V ~ 40 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
High-Voltage, Step-Down Controller with
Synchronous Rectifier for CPU Power
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, GND = PGND = 0V, IVL = IREF = 0A, T A = -40 to +85°C , SYNC = 0V, unless otherwise noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+3.3V and +5V STEP-DOWN CONTROLLERS
Input Supply Range
V+
High-side MOSFET drain
5.0
30
40
V
0mV < (CSH - CSL) < 80mV, FB = VL,
5V Output Voltage (CSL)
6V < power input < 40V, includes line and load
4.70
5.10
5.40
V
regulation (Note 4)
0mV < (CSH - CSL) < 80mV, FB = 0V,
3.3V Output Voltage (CSL)
4.5V < power input < 40V, includes line and load
3.10
3.35
3.56
V
regulation (Note 4)
Nominal Adjustable Output
Voltage Range
Feedback Voltage
Line Regulation
External resistor divider
CSH - CSL = 0V
FB = VL, 6V < power input < 40V (Note 4)
FB = 0V, 4.5V < power input < 40V (Note 4)
REF
2.40
0.04
0.04
6.0
2.60
0.06
0.06
V
V
%/V
%/V
Current-Limit Voltage
CSH - CSL, positive
CSH - CSL, negative
70
-40
-100
130
-160
mV
INTERNAL REGULATOR AND
FLYBACK/PWM CONTROLLER REFERENCE
VL Output Voltage
VL Fault Lockout Voltage
VL/CSL Switchover Voltage
SHDN = 2V, 0mA < I VL < 25mA, 5.5V < V+ < 30V
Rising edge, hysteresis = 15mV
Rising edge, hysteresis = 25mV
4.7
3.75
4.2
5.3
4.15
4.7
V
V
V
Reference Output Voltage
Reference Load Regulation
V+ Shutdown Current
V+ Off-State Leakage Current
Quiescent Power Consumption
No external load (Note 1)
0μA < I REF < 100μA
SHDN = 0V, V+ = 30V, CSL = 0V or 6V
FB = CSH = CSL = 6V, VL switched over to CSL
CSH = CSL = 6V
2.43
2.505
1
1
4.8
2.57
50
10
10
8.4
V
mV
μA
μA
mW
OSCILLATOR AND INPUTS/OUTPUTS
Oscillator Frequency
SYNC = REF
SYNC = 0V or 5V
250
120
300
150
350
180
kHz
SYNC High Pulse Width
SYNC Low Pulse Width
250
250
ns
ns
Oscillator Sync Range
210
320
kHz
Maximum Duty Factor
DL On-Resistance
DH On-Resistance
SYNC = REF
SYNC = 0V or 5V
High or low
High or low, BST - LX = 4.5V
89
93
91
96
7
7
%
?
?
Note 1: Since the reference uses VL as its supply, V+ line-regulation error is insignificant.
Note 2: At very low input voltages, quiescent supply current can increase due to excess PNP base current in the VL linear
regulator. This occurs only if V+ falls below the preset VL regulation point (5V nominal).
Note 3: All -40°C to +85°C specifications are guaranteed by design.
Note 4: The power input is the high-side MOSFET drain.
4
_______________________________________________________________________________________
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| MAX798ESE | 功能描述:DC/DC 开关控制器 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 |
| MAX798ESE+ | 功能描述:直流/直流开关转换器 Step-Down Controller for CPU Power RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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