diff --git a/keywords.txt b/keywords.txt
index f4b7e4e..6b65872 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -51,6 +51,8 @@ enableCrc	KEYWORD2
 disableCrc	KEYWORD2
 enableInvertIQ	KEYWORD2
 disableInvertIQ	KEYWORD2
+enableLowDataRateOptimize	KEYWORD2
+disableLowDataRateOptimize	KEYWORD2
 setGain	KEYWORD2
 
 random	KEYWORD2
diff --git a/src/LoRa.cpp b/src/LoRa.cpp
index 103ddbb..a16e55e 100644
--- a/src/LoRa.cpp
+++ b/src/LoRa.cpp
@@ -586,6 +586,13 @@ void LoRaClass::setLdoFlag()
   writeRegister(REG_MODEM_CONFIG_3, config3);
 }
 
+void LoRaClass::setLdoFlagForced(const boolean ldoOn)
+{
+  uint8_t config3 = readRegister(REG_MODEM_CONFIG_3);
+  bitWrite(config3, 3, ldoOn);
+  writeRegister(REG_MODEM_CONFIG_3, config3);
+}
+
 void LoRaClass::setCodingRate4(int denominator)
 {
   if (denominator < 5) {
@@ -632,6 +639,16 @@ void LoRaClass::disableInvertIQ()
   writeRegister(REG_INVERTIQ2, 0x1d);
 }
 
+void LoRaClass::enableLowDataRateOptimize()
+{
+   setLdoFlagForced(true);
+}
+
+void LoRaClass::disableLowDataRateOptimize()
+{
+   setLdoFlagForced(false);
+}
+
 void LoRaClass::setOCP(uint8_t mA)
 {
   uint8_t ocpTrim = 27;
diff --git a/src/LoRa.h b/src/LoRa.h
index bad87da..a7002b4 100644
--- a/src/LoRa.h
+++ b/src/LoRa.h
@@ -79,6 +79,8 @@ public:
   void disableCrc();
   void enableInvertIQ();
   void disableInvertIQ();
+  void enableLowDataRateOptimize();
+  void disableLowDataRateOptimize();
   
   void setOCP(uint8_t mA); // Over Current Protection control
   
@@ -107,6 +109,7 @@ private:
   long getSignalBandwidth();
 
   void setLdoFlag();
+  void setLdoFlagForced(const boolean);
 
   uint8_t readRegister(uint8_t address);
   void writeRegister(uint8_t address, uint8_t value);