SI9137LG-T1-E3 Vishay, SI9137LG-T1-E3 Datasheet - Page 9

• Manufacturer Part Number: SI9137LG-T1-E3
• Description: IC,SMPS CONTROLLER,CURRENT-MODE,BICMOS,SSOP,28PIN,PLASTIC
• Manufacturer: Vishay

Specifications of SI9137LG-T1-E3

• Duty Cycle (max): 95 %
• Output Voltage: 3.3 V, 5 V, 5 V to ADJ V
• Output Current: 1000 mA
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Switching Frequency: 330 KHz
• Maximum Operating Temperature: + 90 C
• Minimum Operating Temperature: 0 C
• Synchronous Pin: No
• Topology: Boost, Buck, Flyback
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Document Number: 70874
S-40808—Rev. C, 26-Apr-04
TIMING DIAGRAMS
(Sysmon EN)
(Sysmon EN)
RUN/STOP
RUN/STOP
f
OSC EN
max
f
OSC EN
max
V
OSC
(SS)
V
OSC
REF
(SS)
V
DH
REF
D
V
V
DH
DL
IN
V
L
L
IN
L
2.4 V
t
BBM
FIGURE 2. Converter is Enabled Before V
FIGURE 3. Converter is Enabled After V
2.4 V
4 ms
4 ms
IN
IN
is Applied
is Applied
The converter is enabled
V
LDO is activated after V
applied
REF circuit is activated after V
becomes available
After V
the converter is turned on
Oscillator is activated
Slow soft-start gradually increases
the maximum inductor current
High-side gate drive duty ratio
gradually increases to maximum
Low-side gate drive
The converter is enabled
V
LDO is activated after V
applied
REF circuit is activated after V
becomes available
After V
the converter is turned on
Oscillator is activated
Slow soft-start gradually increases
the maximum inductor current
IN
IN
is applied
is applied
Vishay Siliconix
REF
REF
goes above 2.4 V,
goes above 2.4 V,
IN
IN
www.vishay.com
Si9137
is
is
L
L
9