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MAX8529 数据表(PDF) 3 Page - Maxim Integrated Products

部件名 MAX8529
功能描述  1.5MHz Dual 180째 Out-of-Phase PWM Step-Down Controller with POR
Download  20 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX8529 数据表(HTML) 3 Page - Maxim Integrated Products

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1.5MHz Dual 180° Out-of-Phase
PWM Step-Down Controller with POR
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 12V, EN = ILIM_ = VL, SYNC = GND, IVL = 0mA, PGND = GND, CREF = 0.22µF, CVL = 4.7µF (ceramic), ROSC = 10k
Ω,
compensation components for COMP_ are from Figure 1, TA = -40°C to +85°C (Note 1), unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SYNC Range
Internal oscillator nominal frequency must be set to half
of the SYNC frequency
1000
2800
kHz
High
100
SYNC Input Pulse Width
(Note 3)
Low
100
ns
SYNC Rise/Fall Time
(Note 3)
100
ns
ERROR AMPLIFIER
FB_ Input Bias Current
250
nA
FB_ Input Voltage Set Point
0.99
1.00
1.01
V
0°C to +85°C
1.25
1.8
2.70
FB_ to COMP_ Transconductance
-40°C to +85°C
1.2
1.8
2.9
mS
DRIVERS
DL_, DH_ Break-Before-Make Time
CLOAD = 5nF
30
ns
Low
1.5
2.5
DH_ On-Resistance
High
3
5
Ω
Low
0.6
1.5
DL_ On-Resistance
High
3
5
Ω
LOGIC INPUTS (EN, SYNC)
Input Low Level
Typical 15% hysteresis, VL = 4.75V
0.8
V
Input High Level
VL = 5.5V
2.4
V
Input High/Low Bias Current
VEN = 0 or 5.5V
-1
+0.1
+1
µA
LOGIC OUTPUTS (CKO)
Output Low Level
VL = 5V, sinking 5mA
0.4
V
Output High Level
VL = 5V, sourcing 5mA
4.0
V
COMP_
Pulldown Resistance During
Shutdown and Current Limit
17
Ω
RST OUTPUT
Output-Voltage Trip Level
Both FBs must be over this to allow the reset timer to
start; there is no hysteresis
0.87
0.9
0.93
V
VL = 5V, sinking 3.2mA
0.4
Output Low Level
VL = 1V, sinking 0.4mA
0.3
V
Output Leakage
V+ = VL = 5V, V RST = 5.5V, VFB = 1V
1
µA
Reset Timeout Period
VFB_ = 1V
140
315
560
ms
FB_ to Reset Delay
FB_ overdrive from 1V to 0.85V
4
µs
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
Note 2: Operating supply range is guaranteed by VL line regulation test. Connect V+ to VL for 5V operation.
Note 3: Guaranteed by design and not production tested.


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