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| 型号： | MAX5073ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/25页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 1A/2A 28TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 28 V |
| 输入电压： | 4.5 V ~ 23 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 200kHz ~ 2.2MHz |
| 电流 - 输出： | 1A，2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
2.2MHz, Dual-Output Buck or Boost Converter
with Internal Power MOSFETs
ABSOLUTE MAXIMUM RATINGS
V+ to PGND............................................................-0.3V to +25V
SGND to PGND .....................................................-0.3V to +0.3V
VL to SGND...................-0.3V to the lower of +6V or (V+ + 0.3V)
BST1/VDD1, BST2/VDD2, DRAIN_, PGOOD2, PGOOD1 to
SGND .................................................................-0.3V to +30V
BST1/VDD1 to SOURCE1,
BST2/VDD2 to SOURCE2 ....................................-0.3V to +6V
SOURCE_ to SGND................................................-0.6V to +25V
EN_ to SGND .............................................-0.3V to (VL to +0.3V)
CLKOUT, BYPASS, OSC, COMP1,
COMP2, SYNC, FB_ to SGND ..................-0.3V to (VL + 0.3V)
SOURCE1, DRAIN1 Peak Current ..............................5A for 1ms
SOURCE2, DRAIN2 Peak Current ..............................3A for 1ms
VL, BYPASS to SGND Short Circuit............................Continuous
Continuous Power Dissipation (T A = +70°C)
28-Pin Thin QFN (derate 21.3mW/°C above +70°C).....2758mW*
Package Junction-to-Case Thermal Resistance ( θ JC ).......2°C/W
Operating Temperature Ranges:
MAX5073ETI (T MIN to T MAX )............................-40°C to +85°C
MAX5073ATI (T MIN to T MAX ) .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
* As per JEDEC51 standard.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = VL = 5.2V or V+ = 5.5V to 23V, EN_ = VL, SYNC = GND, I VL = 0mA, PGND = SGND, C BYPASS = 0.22μF, C VL = 4.7μF (ceram-
ic), R OSC = 10k ? (circuit of Figure 1), T A = T J = T MIN to T MAX , unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SYSTEM SPECIFICATIONS
Input Voltage Range
Operating Supply Current
V+ Standby Supply Current
V+
I Q
I STBY
(Note 2)
VL = V+
VL unloaded, no switching, V FB_ = 1V, V+ =
12V, R OSC = 60k ?
EN_ = 0, PGOOD_ floating, V+ = 12V,
R OSC = 60k ? (MAX5073ETI)
5.5
4.5
2.2
0.6
23.0
5.5
4
1.2
V
mA
mA
EN_ = 0, PGOOD_ floating, V+ = 12V,
R OSC = 60k ? (MAX5073ATI)
0.6
1.4
V OUT1 = 3.3V at 1.5A,
V+ = VL = 5V
82
Efficiency
η
V OUT2 = 2.5V at 0.75A
V+ = 12V
80
%
STARTUP/VL REGULATOR
(f SW = 1.25MHz)
V+ = 16V
78
VL Undervoltage Lockout Trip
Level
UVLO
VL falling
3.95
4.1
4.25
V
VL Undervoltage Lockout
Hysteresis
175
mV
VL Output Voltage
VL
V+ = 5.5V to 23V, I SOURCE = 0 to 40mA
4.9
5.2
5.5
V
BYPASS OUTPUT
BYPASS Voltage
BYPASS Load Regulation
V BYPASS
? V BYPASS
I BYPASS = 0, R OSC = 60k ? (MAX5073ETI)
I BYPASS = 0, R OSC = 60k ? (MAX5073ATI)
0 ≤ I BYPASS ≤ 50μA, R OSC = 60k ?
1.98
1.975
0
2.00
2.00
2
2.02
2.025
10
V
mV
SOFT-START
f OSC
Digital Ramp Period
Internal 6-bit DAC
2048
clock
cycles
Soft-Start Steps
64
steps
2
_______________________________________________________________________________________
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