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参数资料
| 型号： | MAX5098AATJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 1A/2A 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），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 0.85 V，4.5 V ~ 28 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： | 无 |
| 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） |
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Dual, 2.2MHz, Automotive Buck or Boost
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 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_/VDD_ = 5.2V
V+ = V IN_HIGH = 5.2V, V L = VDRV =
V BST_/VDD_ = 5.2V
2.8
1.75
3.45
2.1
4.3
2.6
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
(FSEL_1 = V L )
82
200
1.7
90
1.9
95
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
%
SYNC input frequency is twice the
SYNC Frequency Range
f SYNC
individual converter 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
Clock Output Phase Delay
SYNC to Source 1 Phase Delay
Clock Output High Level
Clock Output Low Level
CKO PHASE
SYNC PHASE
V CKOH
V CKOL
R OSC = 62.5k Ω , with respect to converter
2/SOURCE2 waveform
R OSC = 62.5k Ω
V L = 5.2V, sourcing 5mA
V L = 5.2V, sinking 5mA
3.6
40
90
0.6
Degrees
Degrees
V
V
4
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