参数资料
型号: MAX15021ATI+T
厂商: Maxim Integrated Products
文件页数: 3/24页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ DL 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)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电压模式
频率 - 开关: 500kHz ~ 4MHz
电流 - 输出: 2A,4A
同步整流器:
工作温度: -40°C ~ 125°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)
MAX15021
Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Tracking/Sequencing Capability
ELECTRICAL CHARACTERISTICS (continued)
(V AVIN = V PVIN_ = V DVDD_ = 3.3V, V PGND_ = V SGND_ = 0V, R T = 25k Ω , and T A = T J = -40°C to +125°C, unless otherwise noted.
Typical values are at T A = +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CURRENT LIMIT AND HICCUP MODE
Regulator 1 Peak Current Limit
Regulator 1 Valley Current Limit
Regulator 2 Peak Current Limit
Regulator 2 Valley Current Limit
Number of Cumulative Current-Limit
Events to Hiccup
Number of Consecutive Noncurrent
Limit Cycles to Clear N CL
Hiccup Timeout
N CL
N CLR
N HT
V AVIN = 3.3V
V AVIN = 2.5V
V AVIN = 3.3V
V AVIN = 2.5V
V AVIN = 3.3V
V AVIN = 2.5V
V AVIN = 3.3V
V AVIN = 2.5V
4.5
3.4
4.0
3.0
2.25
1.70
2.0
1.5
4.9
3.65
4.9
3.7
2.45
1.85
2.5
1.85
4
3
8192
5.3
3.95
5.65
4.25
2.65
1.98
2.83
2.13
A
A
A
A
Clock
Cycles
Clock
Cycles
Clock
Cycles
ENABLE/SEL
EN_ Threshold
V EN_ rising
1.207
1.225
1.243
V
EN_ Hysteresis
0.12
V
EN_ Input Current
-2.5
+2.5
μA
SEL High Threshold
SEL Low Threshold
0.85 x V AVIN
0.2 x V AVIN
V
V
SEL Input Bias Current
Present only during startup
-100
+100
μA
OSCILLATOR
Switching Frequency Range
Oscillator Accuracy
f SW
f SW = 3MHz x [V RT (V)/1.067(V)]
(Note 4)
f SW ≤ 1500kHz
f SW > 1500kHz
500
-6
-10
4000
+6
+10
kHz
%
Phase Shift Between Regulators
180
Degrees
RT Current
RT Voltage Range
V RT
0 < V RT < 1.067V
31.30
0.13
32
32.58
1.067
μA
V
Minimum Controllable On-Time
Minimum Controllable Off-Time
PWM Ramp Amplitude
PWM Ramp Valley
THERMAL SHUTDOWN
60
60
V AVIN /4
0.3
ns
ns
V
V
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Temperature rising
+160
15
°C
°C
Note 3: Specifications are 100% production tested at T A = +25°C and T A = +125°C. Maximum and minimum specifications over
temperature are guaranteed by design.
Note 4: When operating with V AVIN = 2.5V, the maximum switching frequency should be derated to 3MHz.
Maxim Integrated
3
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