L6725TR STMicroelectronics, L6725TR Datasheet - Page 12

• Manufacturer Part Number: L6725TR
• Description: IC CTRLR PWM ADJ STP DWN 16SOICN
• Manufacturer: STMicroelectronics

Specifications of L6725TR

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 550kHz
• Duty Cycle: 100%
• Voltage - Supply: 4.5 V ~ 18 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 550kHz
• Output Voltage: 0.6 V to 18 V
• Output Current: 30 A
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• For Use With: 497-5867 - EVAL BOARD 20A 250KHZ L6725497-5500 - EVAL BOARD FOR L6725
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5096-2

Device description
5.5
Figure 4.
5.6
Figure 5.
12/32
Error amplifier
Soft start
When both V
the start-up phase takes place. Otherwise the SS pin is internally shorted to GND. At start-up, a
ramp is generated charging the external capacitor C
initial value for this current is 35µA and charges the capacitor up to 0.5V. After that it becomes
10µA until the final charge value of approximately 4V (see
Vss
Error amplifier reference
Soft-Start phase.
CC
and V
IN
are above their turn-ON thresholds (V
0.5V
SS
with an internal current generator. The
Figure
4V
IN
is monitored by the OCH pin)
5.).
1.25V
4.2V
Vcc
Vin
L6725 - L6725A
t
t