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부품번호 | OCP3601 기능 |
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기능 | Step-Up DC/DC Controller | ||
제조업체 | OCS | ||
로고 | |||
OCP3601
Step-Up DC/DC Controller
General Description
The OCP3601 is a boost topology switching regulator control IC for battery-used applications field. The OCP3601
includes a totem-pole single output stage for driving NPN transistor or N-MOS, high precision reference (0.5V) for
comparing output voltage with feedback amplifier, an internal dead-time control for controlling the minimum duty cycle,
programmable soft start with short circuit protection function and logic level control for operating mode or standby
mode.
Features
Wide supply voltage operating range: 1.8 to 15V
Reference voltage precision: 4%
Low current consumption: Operation Mode 5.5mA
Standby-by Mode: 1μA
High speed oscillator frequency: 1MHz max
Programmable Soft Start function (SS)
Short Circuit Protection function (SCP)
Totem-pole output with adjustable on/off current
(for NPN transistors or n-channel MOSFET)
Logic level control stand-by mode function
Package: SOP8/MSOP8/TSSOP8
Typical Application
Digital Camera
PDA
Portable Equipment
Pin Assignment
SOP8
MSOP8
TSSOP8
FB 1
SCP 2
Vcc 3
BR/CTL 4
OCP3601
8 COMP
FB
7 OSC
SCP
6 GND
Vcc
BR/CTL
5 OUT
1
2
3
4
OCP3601
8 COMP
FB 1
7 OSC
6 GND
SCP 2
Vcc 3
5 OUT BR/CTL 4
OCP3601
8 COMP
7 OSC
6 GND
5 OUT
Pin Description
Name
FB
SCP
VCC
BR/CTL
OUT
GND
OSC
COMP
No.
1
2
3
4
5
6
7
8
I/O Description
I Error amplifier inverting input pin
I
Connected a capacitor
Soft start and SCP function pin
P IC Power supply
I Output current setting and control pin
O Totem-pole output
P IC ground
I Capacitor and resistor connected for the frequency of oscillation
O Error amplifier compensation output
Page1 - 17
Rev. 1.1 Sep 26, 2005
Free Datasheet http://www.Datasheet4U.com
OCP3601
Step-Up DC/DC Controller
DC Electrical Characteristics (Cont.)
Error Amplifier section
Parameter
Input threshold voltage
VT change with voltage
VT change with temperature
Input basic current
Voltage Gain
Frequency bandwidth
Output voltage
Positive
Swing
Negative
Output source current
Output sink current
Symbol
VFB
ΔVFB /ΔV
ΔVFB /ΔV
IB
AV
BW
VPOS
VNEG
ISOURCE
ISINK
Test Conditions
VCOMP=450mV
VCC=2V to 15V
Ta=-10℃ to 85℃
AV =0dB
VCOMP=450mV
Output section
Parameter
Output high voltage
Output high voltage
Output saturation voltage
Output saturation voltage
Output source current
Output sink current
Internal pull-down resistor
Symbol
VOH1
VOH2
VOl1
VOl2
IOSOURCE
IOSINK
RO
Test Conditions
R B=390Ω ,IO=- 15mA
R B=750Ω ,IO=- 10mA,VCC =1.8V
R B=390Ω ,IO=15mA
R B=750Ω ,IO=10mA,V CC=1.8V
R B=390Ω ,VO=- 0.9V
R B=390Ω ,VO=- 0.3V
Output Current Setting / Control section
Parameter
Symbol
Pin voltage
Input off condition
Input on condition
Pin current range
VBR
IOFF
ION
IBR
Test Conditions
R B=390Ω
Min.
480
-1.0
0.78
24
Min.
1.0
0.8
30
20
Min.
0.15
-20
-1.8
Typ.
500
5
1
-0.2
100
6
0.87
0.05
-40
40
Typ.
1.2
1.0
0.1
0.1
-40
40
30
Typ.
0.22
Max.
520
20
1.0
0.2
-24
Max.
0.2
0.2
-20
40
Max.
0.3
0
-4.5
-0.1
Unit
mV
mV
%
μA
V/V
MHz
V
μA
μA
Unit
V
V
V
V
mA
mA
KΩ
Unit
V
μA
μA
mA
Page4 - 17
Rev. 1.1 Sep 26, 2005
Free Datasheet http://www.Datasheet4U.com
4페이지 Triangle Oscillator Frequency
vs Timing Resistance
VCC =2V
TA=25OC
CT=100P F
CT=1000P F
CT=10000PF
Timing resistor Rt(Ω)
Figure 9
Ambient temperature vs. Frequency
variation ratio
30
Vcc=2V
10 RT=3.0KΩ
CT =270PF
5
0
-5
-10
-15
-25 0 25 50 75 100
Ambient Temperature Ta(℃)
Figure 11
OCP3601
Step-Up DC/DC Controller
Supply voltage vs. Frequency
variation ratio
15
Ta=+25℃
10 RT=3.0KΩ
CT =270PF
5
0
-5
-10
-15
0
4 8 12 16
Supply voltage Vcc (V)
Figure 10
20
Page7 - 17
Rev. 1.1 Sep 26, 2005
Free Datasheet http://www.Datasheet4U.com
7페이지 | |||
구 성 | 총 17 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
OCP3601 | Step-Up DC/DC Controller | OCS |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |