MSP430F6736 LCD charge pump current

Hi 

MSP430F6736, the current is ~5uA when LCD off, but current raise to ~20uA when open LCD with charge pump. The current from LCD charge pump is ~15uA. 

What's the normal current should be? Here is LCD initialization configuration. Could you help have a check? I can upload part of LCD SCH if you need. Thanks.

void BSP_HMI_Display_Init(void)
{    
    LCD_C_initParam initParams = {
        LCD_C_CLOCKSOURCE_ACLK,
        LCD_C_CLOCKDIVIDER_28,
        LCD_C_CLOCKPRESCALAR_2,
        LCD_C_4_MUX,
        LCD_C_LOW_POWER_WAVEFORMS,
        LCD_C_SEGMENTS_ENABLED
    };
    
    LCD_C_init(LCD_C_BASE, &initParams);    
   
    LCD_C_enableChargePump(LCD_C_BASE);
    LCD_C_setVLCDVoltage(LCD_C_BASE, LCD_C_CHARGEPUMP_VOLTAGE_3_02V_OR_2_52VREF);
    LCD_C_setPinAsLCDFunctionEx(LCD_C_BASE, 
                                LCD_C_SEGMENT_LINE_0, 
                                LCD_C_SEGMENT_LINE_21);
    LCD_C_clearMemory(LCD_C_BASE);
    
    LCD_C_on(LCD_C_BASE);
}