LTC3736EGN-1 Linear Technology, LTC3736EGN-1 Datasheet - Page 4

• Manufacturer Part Number: LTC3736EGN-1
• Description: IC CTRLR SW SYNC DUAL 2PH 24SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3736EGN-1

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 9.8 V
• Current - Output: 1A
• Frequency - Switching: 450kHz ~ 580kHz
• Voltage - Input: 2.75 ~ 9.8 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LTC3736-1
Tracking Start-Up with External
Soft-Start (C
V
R
SSDIS = V
FIGURE 15 CIRCUIT
4
TYPICAL PERFOR A CE CHARACTERISTICS
0.001
IN
LOAD1
0.01
–100
–110
0.1
–10
–20
–30
–40
–50
–60
–70
–80
–90
= 5V
10
1
410k
1
Efficiency and Power Lost vs
Load Current
= R
FIGURE 13 CIRCUIT
V
Input Voltage Noise
(Spread Spectrum Disabled)
IN
FIGURE 13 CIRCUIT
V
V
R
SSDIS = V
IN
IN
OUT
LOAD2
BW
= 5V
= 5V
= 30Hz
= 2.5V
450k
SS
10
= 1Ω
40ms/DIV
LOAD CURRENT (mA)
IN
= 0.15µF)
FREQUENCY (Hz)
490k
100
530k
1000
37361 G07
V
V
OUT
OUT
W
570k
= 2.5V
= 1.8V
V
2.5V
V
1.8V
500mV/
DIV
37361 G01
OUT1
OUT2
37361 G04
10000
U
610k
100
95
90
85
80
75
70
65
60
55
50
Output Voltage Ripple
FIGURE 15 CIRCUIT
ENVELOPE OF 100 SAMPLES
AC-COUPLED
100mV/DIV
–100
–110
–10
–20
–30
–40
–50
–60
–70
–80
–90
2A/DIV
410k
V
OUT
Input Voltage Noise
(Spread Spectrum Enabled)
FIGURE 13 CIRCUIT
V
V
R
SSDIS = GND
I
L
IN
OUT
BW
Load Step
(Spread Spectrum Enabled)
V
V
I
SSDIS = GND
FIGURE 15 CIRCUIT
= 5V
LOAD
IN
OUT
= 30Hz
= 2.5V
450k
= 3.3V
1µs/DIV
= 1.8V
= 300mA TO 3A
FREQUENCY (Hz)
490k
100µs/DIV
530k
37361 G20
570k
SSDIS = V
CONSTANT
550kHz
OPERATION
50mV/DIV
AC-COUPLED
SSDIS = GND
SPREAD
SPECTRUM
37361 G05
T
A
610k
= 25°C unless otherwise noted.
37361 G02
IN
AC-COUPLED
100mV/DIV
Tracking Start-Up with Internal
Soft-Start (C
V
R
SSDIS = GND
FIGURE 15 CIRCUIT
IN
LOAD1
2A/DIV
V
–2
–3
–4
–5
= 5V
–1
OUT
5
4
3
2
1
0
I
2
L
Oscillator Frequency
vs Input Voltage
= R
SSDIS = V
Load Step
(Spread Spectrum Disabled)
V
V
I
SSDIS = V
FIGURE 15 CIRCUIT
LOAD
IN
OUT
LOAD2
3
= 3.3V
= 1.8V
= 300mA TO 3A
SS
200µs/DIV
= 1Ω
IN
4
IN
= 0µF)
INPUT VOLTAGE (V)
5
100µs/DIV
6
7
37361 G06
8
V
2.5V
V
1.8V
500mV/
DIV
9
37361 G08
OUT1
OUT2
37361f
37361 G03
10