MAX1714BEEE+T Maxim Integrated Products, MAX1714BEEE+T Datasheet - Page 9

• Manufacturer Part Number: MAX1714BEEE+T
• Description: IC CNTRLR STP DWN HS 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1714BEEE+T

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2.5V, 3.3V, Adj
• Current - Output: 8A
• Frequency - Switching: 200kHz, 300kHz, 600kHz
• Voltage - Input: 2 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 667mW
• Output Voltage: 1 V to 5.5 V
• Output Current: 3000 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 600 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Buck
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 1. Standard Application Circuit
The standard application circuit (Figure 1) generates a
low-voltage rail for general-purpose use in a notebook
computer (I/O supply, fixed CPU core supply, DRAM
supply). This DC-DC converter steps down a battery or
AC adapter voltage to voltages from 1.0V to 5.5V with
high efficiency and accuracy.
See Table 1 for a list of component selections for com-
mon applications. Table 2 lists component manufacturers.
( ) = ARE FOR THE MAX1714B ONLY.
NOTE: IN THE MAX 1714B, AGND AND PGND ARE INTERNALLY CONNECTED TO THE GND PIN.
Standard Application Circuit
_______________________________________________________________________________________
BIAS SUPPLY
4.5V TO 28V
V
IN
LOW-NOISE
+5V
CONTROL
CONTROL
ON/OFF
0.22µF
High-Speed Step-Down Controller
C4
4.7µF
C5
V+
SHDN
SKIP
TON
REF
AGND
(GND)
ILIM
+5V
V
CC
MAX1714
20Ω
R1
PGOOD
(GND)
PGND
V
OUT
BST
DD
DH
LX
DL
FB
for Notebook Computers
+5V
The MAX1714 buck controller is targeted for low-voltage
power supplies for notebook computers. Maxim‘s propri-
etary Quick-PWM pulse-width modulator in the MAX1714
is specifically designed for handling fast load steps
while maintaining a relatively constant operating fre-
quency and inductor operating point over a wide range
of input voltages. The Quick-PWM architecture circum-
vents the poor load-transient timing problems of fixed-
frequency current-mode PWMs while also avoiding the
problems caused by widely varying switching frequen-
cies in conventional constant-on-time and constant-off-
time PWM schemes.
C7
0.1µF
D2
CMPSH-3
R2
100k
3.3µF
C6
POWER-GOOD
INDICATOR
Q1
Q2
C1
L1
D1
Detailed Description
C2
V
OUT
9