MAX8833 Maxim Integrated Products, MAX8833 Datasheet - Page 4

• Manufacturer Part Number: MAX8833
• Description: 2MHz Step-Down Regulator
• Manufacturer: Maxim Integrated Products

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Dual, 3A, 2MHz Step-Down Regulator
ELECTRICAL CHARACTERISTICS (continued)
(V
0.022µF, PWRGD not connected; T
Note 2: All devices 100% production tested at +25°C. Limits over temperature are guaranteed by design.
Note 3: V
(V
4
FSYNC
FSYNC Capture Range
FSYNC Input Threshold
FSYNC Output Voltage
Phase Shift from LX1 to LX2
PWRGD1, PWRGD2
PWRGD1 Threshold Voltage
PWRGD2 Threshold Voltage
PWRGD_ Hysteresis
PWRGD_ Falling Edge Deglitch
PWRGD_ Output-Low Voltage
PWRGD_ Leakage Current
IN
IN1
100
90
80
70
60
50
40
30
20
10
_______________________________________________________________________________________
= V
0
= V
100
vs. LOAD CURRENT WITH 3.3V INPUT
VDD
IN2
V
VDD
OUT
= V
= 3.3V. MAX8833, circuit of Figure 6, T
= 2.5V
must equal V
VDL
LOAD CURRENT (mA)
PARAMETER
EFFICIENCY
= 3.3V, V
V
OUT
1000
= 1.8V
VDL
FB
V
OUT
and be equal to or greater than V
= 0.5V, V
= 1.2V
A
= -40°C to +85°C, typical values are at T
10,000
SS_
= V
100
V
and V
V
and V
I
V
V
PWRGD_
90
80
70
60
50
40
30
20
10
REFIN
FB1
FB2
PWRGD
FB_
0
100
A
vs. LOAD CURRENT WITH 2.5V INPUT
= 0.9V
= +25°C, unless otherwise noted.)
rising with respect to V
rising with respect to V
REFIN
SS2
= 600mV, PGND_ = GND, R
= 4mA
= 3.6V,
> 540mV typ
> 540mV typ
LOAD CURRENT (mA)
V
OUT
EFFICIENCY
CONDITIONS
IN
= 1.8V
_.
1000
Typical Operating Characteristics
V
OUT
REFIN
SS2
A
= 1.2V
T
T
= +25°C, unless otherwise noted.) (Note 2)
,
A
A
,
= +25°C
= +85°C
10,000
FSYNC
= 10kΩ, L = 0.47µH, C
2400
2200
2000
1800
1600
1400
1200
1000
800
600
400
3
0.975
MIN
250
1.3
SWITCHING FREQUENCY vs. R
88
88
35
6
TYP
0.03
0.01
180
1.5
1.0
2.6
9
90
90
45
R
FSYNC
12
BST_
(kΩ)
1.025
MAX
2500
0.15
1.7
92
92
55
1
= 0.1µF, C
15
18
FSYNC
D eg r ees
UNITS
kHz
µA
µs
%
%
%
V
V
V
SS
21
=