MAX1858AEEG+ Maxim Integrated Products, MAX1858AEEG+ Datasheet - Page 9

• Manufacturer Part Number: MAX1858AEEG+
• Description: IC CNTRLR BUCK DUAL 24-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1858AEEG+

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 0 ~ 18 V
• Current - Output: 10A
• Frequency - Switching: 100kHz ~ 600kHz
• Voltage - Input: 4.5 ~ 23 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Power - Output: 762mW
• Output Voltage: 0 V to 18 V
• Output Current: 10 A
• Input Voltage: 4.5 V to 23 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Functional Diagram
The internal V
supply the IC, power the low-side gate driver, charge the
external boost capacitor, and supply small external
loads. When driving large FETs, little or no regulator cur-
rent may be available for external loads.
MAX1876A ONLY)
Dual 180° Out-of-Phase Buck Controllers with
(MAX1858A/
COMP1
COMP2
SYNC
GND
OSC
CK0
RST
REF
FB1
FB2
EN
L
linear regulator can source over 50mA to
_______________________________________________________________________________________
V
REF
V
L
SOFT-START DAC
MAX1858A ONLY)
(SEQUENCING—
OSCILLATOR
1V
Sequencing/Prebias Startup and POR
P-P
SHUTDOWN
RESET
UVLO
AND
V
2.0V
REF
CONVERTER 2
For example, when switched at 600kHz, a single large
FET with 18nC total gate charge requires 18nC
= 11mA. To drive larger MOSFETs, or deliver larger
loads, connect V
to 5.5V.
MAX1858A
MAX1875A
MAX1876A
CONVERTER 1
R
S
L
Q
Q
to an external power supply from 4.5V
REGULATOR
5V LINEAR
V
L
5µA
- 0.5V
V+
V
BST1
DH1
LX1
DL1
PGND
ILIM1
BST2
DH2
LX2
DL2
ILIM2
L
✕
600kHz
9