MAX797CSE+T Maxim Integrated Products, MAX797CSE+T Datasheet - Page 28

• Manufacturer Part Number: MAX797CSE+T
• Description: IC CNTRLR STEP DOWN 16-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX797CSE+T

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 3.3V, 5V, Adj
• Current - Output: 10A
• Frequency - Switching: 150kHz, 300kHz
• Voltage - Input: 4.5 ~ 30 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Power - Output: 696mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Step-Down Controllers with
Synchronous Rectifier for CPU Power
Figure 16. 5V-to-12V PWM Boost Converter
Figure 17. 90% Efficient, Low-Voltage PWM Flyback Converter (4 Cells to 5V)
28
____________________________________________Application Circuits (continued)
______________________________________________________________________________________
4.75V TO 6V
220µF
VIN
INPUT
3V TO 6.5V
C1
4.7µF
0.33µF
100µF
LOW IQ
4.7µF
HI EFF
BST
VL
SYNC
REF
GND
SKIP
CMPSH-3A
CSH
SKIP
BST
VL
MAX797
SYNC
0.01Ω
CSH
0.33µF
SS
MAX797
0.01µF
33mΩ
CSL
REF
PGND
SHDN
DH
LX
V+
FB
GND
CSL
SHDN
PGND
DH
DL
V+
LX
FB
5µH
L1
Q1, Q2 = Si9410DY
T1 = COILTRONIX CTX 10-4
START-UP SUPPLY VOLTAGE = 3.5V TYP
L1 = 2x SUMIDA CDRH125-100 IN PARALLEL
D1 = MOTOROLA MBR640
Q1 = MOTOROLA MTD20N03HDL
C1 = SANYO OS-CON 220µF, 10V
C2, C3 = SANYO OS-CON 150µF, 16V
10µH PRIMARY, 1:1
T1
Q1
Q1
D1
Q2
220µF
150µF
C2
220µF
150µF
C3
200k
200k
191k
49.9k
+5V AT 500mA
+12V AT 2A
OUTPUT