MAX8538EEI+ Maxim Integrated Products, MAX8538EEI+ Datasheet - Page 3

• Manufacturer Part Number: MAX8538EEI+
• Description: IC CNTRLR BUCK DUAL 28-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8538EEI+

• Applications: Controller, DDR
• Voltage - Input: 4.5 ~ 23 V
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 3.6 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Output Voltage: 0.8 V to 3.6 V
• Output Current: 30 A
• Input Voltage: 4.5 V to 23 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Case: SSOP
• Dc: 05+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V+ = 12V, EN_ = VL, BST_ = 6V, LX_ = 1V, VL load = 0mA, C
0V, C
otherwise noted.)
Load, Tracking, and DDR Memory Power Supplies
Minimum Duty Cycle
DH_ Minimum Off-Time
DH_ Minimum On-Time
ERROR AMPLIFIER
FB_ Input Bias Current
FB1 Input-Voltage Set Point
FB2 Input-Voltage Set Point
Op-Amp Open-Loop Voltage
Gain
Op-Amp Gain Bandwidth
Op-Amp Output-Voltage Slew
Rate
DRIVERS
Break-Before-Make Time
DH1, DH2 On-Resistance in Low
State
DH1, DH2 On-Resistance in High
State
DL1, DL2 On-Resistance in Low
State
DL1, DL2 On-Resistance in High
State
LOGIC INPUTS (EN_)
Input Low Level
Input High Level
Input Bias Current
VTTR
VTTR Output Voltage Range
VTTR Output Accuracy
REFIN
REFIN Input Bias Current
Dual-Synchronous Buck Controllers for Point-of-
SS
= 10nF, C
PARAMETER
VTTR
_______________________________________________________________________________________
= 1µF, R
FREQ
R
R
R
V
Over line and load
MAX8538
MAX8537/MAX8539, REFIN = 0.9V
COMP_ = 1.3V to 2.3V
4.5V < VL < 5.5V
4.5V < VL < 5.5V
0V to 5.5V
Source or sink 15mA
-15mA ≤ I
REFIN = 0.9V or 1.25V
= 20kΩ, DH_ = open, DL_ = open, POK_ = open, circuit of Figure 1, T
FREQ
FREQ
FREQ
FB
_ = 0.8V
= 100kΩ
= 20kΩ
= 14.3kΩ
VTTR
≤ +15mA, REFIN = 0.9V or 1.25V
CONDITIONS
VL
= 10µF (ceramic), REFIN = 1.25V, PGND = AGND = FB_ = ILIM_ =
0.792
0.792
0.894
-250
MIN
-1.0
2.4
0.5
72
-1
REFIN
0.800
0.800
0.900
+0.1
TYP
>80
140
120
2.4
0.9
1.3
0.7
1.6
12
16
25
15
30
A
= 0°C to +85°C, unless
0.808
0.808
0.906
+250
MAX
+1.0
200
250
2.5
2.5
1.5
2.8
0.8
2.5
+1
18
25
4
UNITS
MHz
V/µs
nA
dB
µA
nA
ns
ns
ns
%
%
Ω
Ω
Ω
Ω
V
V
V
V
V
3