参数资料
型号: MAX5099ATJ+T
厂商: Maxim Integrated Products
文件页数: 4/27页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ DL 32TQFN
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: 0.8 V ~ 17.1 V
输入电压: 4.5 V ~ 19 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:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 32-TQFN-EP(5x5)
Dual, 2.2MHz, Automotive Synchronous Buck
Converter with 80V Load-Dump Protection
ELECTRICAL CHARACTERISTICS (continued)
(VDRV = V L , V+ = V L = IN_HIGH = 5.2V or V+ = IN_HIGH = 5.2V to 19V, EN_ = V L , SYNC = GND, I VL = 0mA, PGND = SGND,
C BYPASS = 0.22μF (low ESR), C VL = 4.7μF (ceramic), C V+ = 1μF (low ESR), C IN_HIGH = 1μF (ceramic), R IN_HIGH = 3.9k Ω , R OSC = 10k Ω ,
T J = -40°C to +125°C, unless otherwise noted.) (Note 2)
PARAMETER
On-Resistance High-Side
MOSFET Converter 2
SYMBOL
R ON2
CONDITIONS
I SWITCH = 100mA, BST2/VDD2 to
V SOURCE2 = 5.2V
I SWITCH = 100mA, BST2/VDD2 to
V SOURCE2 = 4.5V
MIN
TYP
280
300
MAX
520
UNITS
m Ω
Minimum Converter 1 Output
Current
Minimum Converter 2 Output
Current
Converter 1/Converter 2
MOSFET DRAIN_ Leakage
Current
Internal Weak Low-Side Switch
On-Resistance
I OUT1
I OUT2
I LK12
R ONLSSW_
V OUT1 = 5V, V+ = 12V (Note 4)
V OUT2 = 3.3V, V+ = 12V (Note 4)
V EN1 = V EN2 = 0V, V DS = 19V, V DRAIN_ =
19V, V SOURCE_ = 0V
I LSSW = 30mA
2
1
22
20
A
A
μA
Ω
INTERNAL SWITCH CURRENT LIMIT
Internal Switch Current-Limit
Converter 1
Internal Switch Current-Limit
Converter 2
I CL1
I CL2
V+ = V IN_HIGH = 5.2V, V L = VDRV =
V BST_ /V DD_ = 5.2V
V+ = V IN_HIGH = 5.2V, V L = VDRV =
V BST_ /V DD_ = 5.2V
2.8
1.75
3.45
2.10
4.3
2.60
A
A
SWITCHING FREQUENCY
PWM Maximum Duty Cycle
Switching Frequency Range
Switching Frequency
D MAX
f SW
f SW
SYNC = SGND, f SW = 1.25MHz
R OSC = 6.81k Ω , each converter
90
200
1.7
92
1.9
100
2200
2.1
%
kHz
MHz
Switching Frequency Accuracy
5.6k Ω < R OSC < 10k Ω , 1%
10k Ω < R OSC < 62.5k Ω , 1%
5
7
%
Each converter switching frequency is half
SYNC Frequency Range
f SYNC
of the SYNC input frequency,
FSEL_1 = V L (see the Setting the
400
4400
kHz
Switching Frequency section)
SYNC High Threshold
SYNC Low Threshold
SYNC Input Leakage
SYNC Input Minimum Pulse
Width
V SYNCH
V SYNCL
I SYNC_LEAK
t SYNCIN
2
100
0.8
2
V
V
μA
ns
Sync to Source 1 Phase Delay
SYNC PHASE
R OSC = 62.5k Ω
90
Degrees
4
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