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LT3750 датащи(PDF) 6 Page - Linear Technology

номер детали LT3750
подробное описание детали  2-Cell Supercapacitor Charger
PDF  16 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT3750 датащи(HTML) 6 Page - Linear Technology

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LTC3226
6
3226fa
TYPICAL PERFORMANCE CHARACTERISTICS
Charge Profile When Top
Capacitor = Bottom Capacitor
Charge Profile When Top
Capacitor < Bottom Capacitor
Charge Profile When Top
Capacitor > Bottom Capacitor
Normal-to-Back-Up Mode
Switching Transient Waveform
Leakage Balancer Source and
Sink Capability
VMID Shunt Regulator Voltage
vs Current and Temperature
Ideal Diode Gate Current
vs (VIN-VOUT)
VMID VOLTAGE (V)
0
4
8
12
4
3226 G10
0
–4
2
6
10
–2
–6
–8
1
0.5
2
1.5
3
3.5
4.5
2.5
5
VMID
SOURCING
CURRENT
VMID
SINKING
CURRENT
90°C
25°C
–45°C
VIN = 3.3V, VCPO = 5V
VMID SHUNT REG OFF
VMID CURRENT (mA)
2.50
2.60
2.70
2.45
2.55
2.65
0.1
10
100
1000
3226 G11
2.40
1
90°C
25°C
–45°C
VIN = 3.3V
VCPO = 5V
ONLY LEAKAGE
BALANCER
ACTIVE
SHUNT
REGULATOR
ACTIVE
VIN – VOUT (mV)
–100
–5
–4
–2
–1
0
5
2
–50
0
3226 G12
–3
3
4
1
50
100
FAST
OFF
FAST
ON
LINEAR
REGION
FORWARD
VOLTAGE
3226 G13
TIME (5 SECONDS/DIV)
CPO
VIN
VMID
1x
MODE
2x
MODE
RPROG = 33.2k
CSC = 1.2F
6
5
4
3
2
1
–1
0
3226 G14
TIME (5 SECONDS/DIV)
6
5
4
3
2
1
0
–1
VIN
VMID
1x
MODE
2x
MODE
RPROG = 33.2k, CSC = 1.2F
EXTRA 1.5F BETWEEN CPO
AND VMID
CPO
VMID CLAMPED
(SHUNT ACTIVE)
3226 G16
0
100
200
300
400
500
TIME (μs)
4
3
2
1
0
VIN
VOUT
PFO
(1V/DIV)
CSC = 1.2F
COUT = 47μF
ILOAD = 2A
TA = 25°C, unless otherwise noted.
3226 G15
TIME (5 SECONDS/DIV)
6
5
4
3
2
1
0
–1
VIN
VMID
1x
MODE
2x
MODE
RPROG = 33.2k,
CSC = 1.2F, EXTRA
1.5F BETWEEN
VMID AND GND
CPO
TOP CAP
CLAMPED



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