SNOSC63B
February 2012 – December 2014
LMP8646
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics: 2.7 V
6.6
Electrical Characteristics: 5 V
6.7
Electrical Characteristics: 12 V
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Theory of Operation
7.3.1.1
Maximum Output Voltage, VOUT_MAX
7.3.1.1.1
Case 1: −2 V < VCM < 1.8 V, and VS > 2.7 V
7.3.1.1.2
Case 2: 1.8 V < VCM < VS, and VS > 3.3 V
7.3.1.1.3
Case 3: VCM > VS, and VS > 2.7 V
7.4
Device Functional Modes
7.4.1
Output Accuracy
7.4.2
Selection of the Sense Resistor, RSENSE
7.4.2.1
RSENSE Consideration for System Error
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Application #1: Current Limiter With a Capacitive Load
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curve
8.2.2
Application #2: Current Limiter With a Resistive Load
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
Application Curve
8.2.3
Application #3: Current Limiter With a Low-Dropout Regulator and Resistive Load
8.2.3.1
Design Requirements
8.2.3.2
Detailed Design Procedure
8.2.3.3
Application Curve
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Trademarks
11.2
Electrostatic Discharge Caution
11.3
Glossary
12
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DDC|6
MPDS124I
サーマルパッド・メカニカル・データ
発注情報
snosc63b_oa
snosc63b_pm
6.8
Typical Characteristics
Unless otherwise specified: T
A
= 25°C, V
S
= V
+
- V
-
, V
SENSE
= +IN - (-IN), R
L
= 10 kΩ.
Figure 1.
Supply Curent vs. Supply Voltage for V
CM
= 2 V
Figure 3.
AC PSRR vs. Frequency
Figure 5.
CMRR vs. High V
CM
Figure 7.
Gain vs. Frequency (BW = 35 kHz)
Figure 9.
Gain Accuracy vs. V
CM
Figure 11.
V
OUT_MAX
vs. Gain at Vs = 2.7 V
Figure 13.
V
OUT_MAX
vs. Gain at Vs = 12 V
Figure 15.
V
OUT_MAX
vs. V
S
at V
CM
= 2.1 V
Figure 17.
Large Step Response at BW = 35 kHz
Figure 19.
Small Step Response at BW = 35 kHz
Figure 21.
Settling Time (Fall) at 1 kHz
Figure 23.
Settling Time (Fall) at 35 kHz
Figure 25.
Common-Mode Step Response (Fall) at 35 kHz
Figure 2.
Supply Current vs. V
CM
Figure 4.
AC CMRR vs. Frequency
Figure 6.
Gain vs. Frequency (BW = 1kHz)
Figure 8.
Gain Accuracy vs. V
CM
Figure 10.
V
OUT
vs. V
SENSE
Figure 12.
V
OUT_MAX
vs. Gain at Vs = 5.0 V
Figure 14.
V
OUT_MAX
vs. V
S
at V
CM
= –2 V
Figure 16.
Large Step Response at BW = 1kHz
Figure 18.
Small Step Response at BW = 1 kHz
Figure 20.
Settling Time (Rise) at 1 kHz
Figure 22.
Settling Time (Rise) at 35 kHz
Figure 24.
Common-Mode Step Response (Rise) at 35 kHz