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参数资料
| 型号： | LTC3705IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR OCP 16SSOP |
| 标准包装： | 100 |
| 输出隔离： | 隔离 |
| 输入电压： | 18 V ~ 80 V |
| 输出电压： | 11V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
LTC3705
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
Power Supply (V CC ) ................................... – 0.3V to 15V
External NMOS Drive (NDRV) .................... – 0.3V to 20V
NDRV to V CC ........................................................... – 0.3V to 5V
Bootstrap Supply (BOOST) ...................... – 0.3V to 115V
Top Source (TS) .......................................... -5V to 100V
GND 1
I S 2
V SLMT 3
UVLO 4
TOP VIEW
16 TS
15 TG
14 BOOST
13 NC
ORDER PART
NUMBER
LTC3705EGN
LTC3705IGN
GN PART
MARKING
BOOST to TS .............................................–0.3V to 15V
Soft-Start Fault, Feedback,
Frequency Set, Transformer
Inputs (SSFLT, FB/IN + , FS/IN – ) .................. – 0.3V to 15V
All Other Pins (V SLMT , I S , UVLO) ................. – 0.3V to 5V
Peak Output Current <1 μ s (TG, BG) ........................... 2A
Operating Ambient Temperature Range .. – 40 ° C to 85 ° C
Operating Junction Temperature (Note 2) ............ 125 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
SSFLT 5 12 NC
NDRV 6 11 V CC
FB/IN + 7 10 BG
FS/IN – 8 9 PGND
3705
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP 3705I
T JMAX = 125 ° C, θ JA = 110 ° C/W
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = V BOOST = 12V, GND = PGND = V TS = 0V, T A = 25 ° C, unless
otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V CC Supply, Linear Regulator and Trickle Charger Shunt Regulator
V CCOP
V CCLR
Operating Voltage Range
Output Voltage
Linear Regulator in Operation
7
12
8
15
V
V
I NDRV
t r(VCC)
I NDRVTO
Current into NDRV Pin
Rise Time of V CC
Linear Regulator Time Out Current Threshold
Linear Regulator in Operation
Linear Regulator Charging (0.5V to 7.5V)
Primary-Side Operation
0.1
45
0.27
1
mA
μ s
mA
I CC
Supply Current
V UVLO = 1.5V, Linear Regulator in
1.4
2.1
mA
Operation (Note 3)
I CCM
Maximum Supply Current
V UVLO = 1.5V, Trickle Charger in Operation,
1.7
2.5
mA
V CC = 13.2V (Note 3)
V CCSR
I CCSR
Maximum Supply Voltage
Minimum Current into NDRV/V CC
Trickle Charger Shunt Regulator
Trickle Charger Shunt Regulator, V CC = 15V
10
14.25
15
V
mA
(Note 3)
Internal Undervoltage
V CCUV
Internal Undervoltage Threshold
V CC Rising
V CC Falling
5.3
4.7
V
V
Gate Drive Undervoltage
V GDUV
Gate Drive Undervoltage Threshold
V CC Rising (Linear Regulator)
V CC Rising (Trickle Charger)
V CC Falling
●
●
●
7.2
13.1
6.8
7.4
13.4
7.0
7.7
14
7.2
V
V
V
Undervoltage Lockout (UVLO)
V UVLOR
V UVLOF
Undervoltage Lockout Threshold Rising
Undervoltage Lockout Threshold Falling
Rising
Falling
●
●
1.220
1.205
1.242
1.226
1.280
1.265
V
V
3705fb
2
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