MIC5156BN Micrel Inc, MIC5156BN Datasheet
MIC5156BN
Specifications of MIC5156BN
Available stocks
Related parts for MIC5156BN
MIC5156BN Summary of contents
Page 1
MIC5156/5157/5158 General Description The MIC5156, MIC5157, and MIC5158 Super Low-Dropout (LDO) Regulator Controllers are single IC solutions for high- current low-dropout linear voltage regulation. Super LDO™ Regulators have the advantages of an external N-channel power MOSFET as the linear pass ...
Page 2
... MIC5156/5157/5158 Ordering Information MIC5156 Part Number Standard MIC5156-3.3BN MIC5156-5.0BN MIC5156BN MIC5156-3.3BM MIC5156-5.0BM MIC5156BM Ordering Information MIC5157 Part Number Standard MIC5157BN MIC5157BM Ordering Information MIC5158 Part Number Standard MIC5158BN MIC5158BM Pin Configuration MIC5156-x GND MIC5157 GND C2– 6 C2+ 7 MIC5156/5157/5158 Temperature ...
Page 3
MIC5156/5157/5158 Pin Description MIC5156 Pin Number Pin Name FLAG 3 GND (3.3V, 5V) 8 (adjustable) EA Pin Description MIC5157, MIC5158 Pin Number Pin Name 1 (MIC5157 (MIC5158) EA ...
Page 4
MIC5156/5157/5158 Absolute Maximum Ratings Supply Input (V ) ....................................................... +38V DD Enable Input (V ) ..........................................–0.3V to 36V EN Gate Output (V ) MIC5156 ......................................... +55V G Charge Pump Node (V ) MIC5157/8 ........................ +55V CP Source Connection (V ) ...
Page 5
MIC5156/5157/5158 Typical Characteristics 3.3V Regulator Output Voltage vs. Temperature 3.34 3.33 3.32 3.31 3.30 3.29 3.28 3.27 3.26 -60 - 120 150 TEMPERATURE (°C) MIC5157/8 On-State Supply Current vs. Supply Voltage 10.0 9.0 8.0 7.0 6.0 ...
Page 6
MIC5156/5157/5158 Block Diagram MIC5156 12k +5V Input Switched 5V Load Block Diagram MIC5157 Oscillator MIC5156/5157/5158 +12V Input 0.1µ 1.235V Bandgap I LIMIT Reference Comparator V Error OU T Comparator ...
Page 7
MIC5156/5157/5158 Block Diagram MIC5158 Oscillator Functional Description A Super LDO Regulator is a complete regulator built around Micrel’s Super LDO Regulator Controller. Refer to Block Diagrams MIC5156, MIC5157, and MIC5158. Version Differences The MIC5156 requires an ...
Page 8
MIC5156/5157/5158 Charge Pump (MIC5157/5158 only) The charge pump tripler creates a dc voltage across reservoir capacitor C3. External capacitors C1 and C2 provide the nec- essary storage for the stages of the charge pump tripler. The tripler’s approximate dc output ...
Page 9
MIC5156/5157/5158 G MIC5157 S or MIC5158 E A GND Figure 1b. Connections for Adjustable Output G MIC5156 E A GND * Optional 16V zener diode recommended in applications where V is greater than 18V G Figure 1c. MIC5156 Connections for ...
Page 10
MIC5156/5157/5158 Current Limiting Current sensing requires a low-value series resistance (R between V and D (drain). Refer to the typical applications. DD The internal current-limiting circuit limits the voltage drop across the sense resistor to 35mV. Equation (2) provides the ...
Page 11
MIC5156/5157/5158 MIC5158 GND R 2 Figure 5. Battery Charger Concept August 2005 Uninterruptible Power Supply V IN The MIC5157 and two N-channel MOSFETs provide battery switching for uninterruptible power ...
Page 12
MIC5156/5157/5158 Package Information 0.018 (0.57) MIC5156/5157/5158 PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.100 (2.54) 0.0375 (0.952) 8-Pin DIP (N) 8-Pin SOIC (M) 12 Micrel, Inc. 0.255 (6.48) ...
Page 13
... MAX) 0.057 (1.45) 0.049 (1.25) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...