diff --git a/esphome/components/xiaomi_cgd1/xiaomi_cgd1.cpp b/esphome/components/xiaomi_cgd1/xiaomi_cgd1.cpp
index 4642768f90..d7f1ec3782 100644
--- a/esphome/components/xiaomi_cgd1/xiaomi_cgd1.cpp
+++ b/esphome/components/xiaomi_cgd1/xiaomi_cgd1.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_cgd1.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_cgd1 {
 
 static const char *const TAG = "xiaomi_cgd1";
 
+static constexpr size_t CGD1_BINDKEY_SIZE = 16;
+
 void XiaomiCGD1::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(CGD1_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi CGD1\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, CGD1_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_cgdk2/xiaomi_cgdk2.cpp b/esphome/components/xiaomi_cgdk2/xiaomi_cgdk2.cpp
index 0dcbcbd05c..9151cbde41 100644
--- a/esphome/components/xiaomi_cgdk2/xiaomi_cgdk2.cpp
+++ b/esphome/components/xiaomi_cgdk2/xiaomi_cgdk2.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_cgdk2.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_cgdk2 {
 
 static const char *const TAG = "xiaomi_cgdk2";
 
+static constexpr size_t CGDK2_BINDKEY_SIZE = 16;
+
 void XiaomiCGDK2::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(CGDK2_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi CGDK2\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, CGDK2_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_cgg1/xiaomi_cgg1.cpp b/esphome/components/xiaomi_cgg1/xiaomi_cgg1.cpp
index f9fffa3f20..54b50a2eee 100644
--- a/esphome/components/xiaomi_cgg1/xiaomi_cgg1.cpp
+++ b/esphome/components/xiaomi_cgg1/xiaomi_cgg1.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_cgg1.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_cgg1 {
 
 static const char *const TAG = "xiaomi_cgg1";
 
+static constexpr size_t CGG1_BINDKEY_SIZE = 16;
+
 void XiaomiCGG1::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(CGG1_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi CGG1\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, CGG1_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_lywsd02mmc/xiaomi_lywsd02mmc.cpp b/esphome/components/xiaomi_lywsd02mmc/xiaomi_lywsd02mmc.cpp
index dff1228f64..da5229c100 100644
--- a/esphome/components/xiaomi_lywsd02mmc/xiaomi_lywsd02mmc.cpp
+++ b/esphome/components/xiaomi_lywsd02mmc/xiaomi_lywsd02mmc.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_lywsd02mmc.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_lywsd02mmc {
 
 static const char *const TAG = "xiaomi_lywsd02mmc";
 
+static constexpr size_t LYWSD02MMC_BINDKEY_SIZE = 16;
+
 void XiaomiLYWSD02MMC::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(LYWSD02MMC_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi LYWSD02MMC\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, LYWSD02MMC_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_lywsd03mmc/xiaomi_lywsd03mmc.cpp b/esphome/components/xiaomi_lywsd03mmc/xiaomi_lywsd03mmc.cpp
index fb0165a21f..44fdb3b816 100644
--- a/esphome/components/xiaomi_lywsd03mmc/xiaomi_lywsd03mmc.cpp
+++ b/esphome/components/xiaomi_lywsd03mmc/xiaomi_lywsd03mmc.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_lywsd03mmc.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_lywsd03mmc {
 
 static const char *const TAG = "xiaomi_lywsd03mmc";
 
+static constexpr size_t LYWSD03MMC_BINDKEY_SIZE = 16;
+
 void XiaomiLYWSD03MMC::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(LYWSD03MMC_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi LYWSD03MMC\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, LYWSD03MMC_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_mhoc401/xiaomi_mhoc401.cpp b/esphome/components/xiaomi_mhoc401/xiaomi_mhoc401.cpp
index 90b654873b..55b81b301e 100644
--- a/esphome/components/xiaomi_mhoc401/xiaomi_mhoc401.cpp
+++ b/esphome/components/xiaomi_mhoc401/xiaomi_mhoc401.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_mhoc401.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,11 +9,14 @@ namespace xiaomi_mhoc401 {
 
 static const char *const TAG = "xiaomi_mhoc401";
 
+static constexpr size_t MHOC401_BINDKEY_SIZE = 16;
+
 void XiaomiMHOC401::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(MHOC401_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG,
                 "Xiaomi MHOC401\n"
                 "  Bindkey: %s",
-                format_hex_pretty(this->bindkey_, 16).c_str());
+                format_hex_pretty_to(bindkey_hex, this->bindkey_, MHOC401_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);
diff --git a/esphome/components/xiaomi_rtcgq02lm/xiaomi_rtcgq02lm.cpp b/esphome/components/xiaomi_rtcgq02lm/xiaomi_rtcgq02lm.cpp
index 498e724368..112bf442e0 100644
--- a/esphome/components/xiaomi_rtcgq02lm/xiaomi_rtcgq02lm.cpp
+++ b/esphome/components/xiaomi_rtcgq02lm/xiaomi_rtcgq02lm.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_rtcgq02lm.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,9 +9,12 @@ namespace xiaomi_rtcgq02lm {
 
 static const char *const TAG = "xiaomi_rtcgq02lm";
 
+static constexpr size_t RTCGQ02LM_BINDKEY_SIZE = 16;
+
 void XiaomiRTCGQ02LM::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(RTCGQ02LM_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG, "Xiaomi RTCGQ02LM");
-  ESP_LOGCONFIG(TAG, "  Bindkey: %s", format_hex_pretty(this->bindkey_, 16).c_str());
+  ESP_LOGCONFIG(TAG, "  Bindkey: %s", format_hex_pretty_to(bindkey_hex, this->bindkey_, RTCGQ02LM_BINDKEY_SIZE, '.'));
 #ifdef USE_BINARY_SENSOR
   LOG_BINARY_SENSOR("  ", "Motion", this->motion_);
   LOG_BINARY_SENSOR("  ", "Light", this->light_);
diff --git a/esphome/components/xiaomi_xmwsdj04mmc/xiaomi_xmwsdj04mmc.cpp b/esphome/components/xiaomi_xmwsdj04mmc/xiaomi_xmwsdj04mmc.cpp
index f8712e7fd4..d3fec6cc9e 100644
--- a/esphome/components/xiaomi_xmwsdj04mmc/xiaomi_xmwsdj04mmc.cpp
+++ b/esphome/components/xiaomi_xmwsdj04mmc/xiaomi_xmwsdj04mmc.cpp
@@ -1,4 +1,5 @@
 #include "xiaomi_xmwsdj04mmc.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_ESP32
@@ -8,9 +9,12 @@ namespace xiaomi_xmwsdj04mmc {
 
 static const char *const TAG = "xiaomi_xmwsdj04mmc";
 
+static constexpr size_t XMWSDJ04MMC_BINDKEY_SIZE = 16;
+
 void XiaomiXMWSDJ04MMC::dump_config() {
+  char bindkey_hex[format_hex_pretty_size(XMWSDJ04MMC_BINDKEY_SIZE)];
   ESP_LOGCONFIG(TAG, "Xiaomi XMWSDJ04MMC");
-  ESP_LOGCONFIG(TAG, "  Bindkey: %s", format_hex_pretty(this->bindkey_, 16).c_str());
+  ESP_LOGCONFIG(TAG, "  Bindkey: %s", format_hex_pretty_to(bindkey_hex, this->bindkey_, XMWSDJ04MMC_BINDKEY_SIZE, '.'));
   LOG_SENSOR("  ", "Temperature", this->temperature_);
   LOG_SENSOR("  ", "Humidity", this->humidity_);
   LOG_SENSOR("  ", "Battery Level", this->battery_level_);